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EN1B-0101GE51 R1000
Excel 50
CONTROLLER
INSTALLATION INSTRUCTIONS
EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101 2
Trademark Information Echelon, LON, LONMARK, LONWORKS, LonBuilder, NodeBuilder, LonManager,
LonTalk, LonUsers, LonPoint, Neuron, 3120, 3150, the Echelon logo, the LONMARK
logo, and the LonUsers logo are trademarks of Echelon Corporation registered in
the United States and other countries. LonLink, LonResponse, LonSupport, and
LonMaker are trademarks of Echelon Corporation.
EXCEL 50 INSTALLATION INSTRUCTIONS
3 EN1B-0101
CONTENTS
Revision overview ........................................................................................................................................................................5
General .......................................................................................................................................................................................... 5
Safety Instructions ....................................................................................................5
Hardware Overview................................................................................................... 6
Version Overview......................................................................................................6
Dimensions ...............................................................................................................7
Mounting........................................................................................................................................................................................8
Housing.....................................................................................................................8
Front Door ............................................................................................................8
Inside Cabinet without MMI ..................................................................................9
Inside Cabinet with MMI .....................................................................................10
Application Module..................................................................................................10
Installation...................................................................................................................................................................................11
Terminal Details...................................................................................................... 11
Block A ...............................................................................................................11
Block B ...............................................................................................................12
Cabling....................................................................................................................13
Cable Routing.....................................................................................................13
Shielding............................................................................................................. 13
Cable Lengths and Cross Sectional Areas.........................................................13
Analog Inputs.......................................................................................................... 14
Technical Description ......................................................................................... 14
Technical Specification....................................................................................... 14
Sensors and Transducers .................................................................................. 14
Digital Inputs ...........................................................................................................16
Technical Description ......................................................................................... 16
Technical Specification....................................................................................... 16
Connection Examples.........................................................................................16
Analog Inputs.......................................................................................................... 17
Technical Description ......................................................................................... 17
Technical Specification....................................................................................... 17
Relay Modules.................................................................................................... 17
Digital Outputs ........................................................................................................18
Technical Description ......................................................................................... 18
Technical Specification....................................................................................... 18
Connection Examples.........................................................................................18
Power Supply.......................................................................................................... 19
CRT-Series.........................................................................................................19
1450 Series ........................................................................................................ 19
Standard Transformers.......................................................................................19
Screw Terminal Block Installation ........................................................................... 20
Phoenix Terminal Block Installation ........................................................................ 21
Adjusting the MMI Display Contrast........................................................................ 22
Front Door Mounted with MMI ............................................................................22
DIN-rail Mounted with MMI .................................................................................22
Communication...........................................................................................................................................................................23
C-Bus ...................................................................................................................... 23
C-Bus Termination..............................................................................................23
Cable Specification............................................................................................. 23
C-Bus Extension by Using Repeaters ................................................................ 24
C-Bus Connection Procedure.............................................................................24
LONWORKS Network Interface .................................................................................25
LONWORKS Bus Termination...............................................................................25
LONWORKS Service LED Diagnostics...................................................................... 26
Controller Serial Port............................................................................................... 27
MMI Connection ................................................................................................. 27
EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101 4
Cable Specifications........................................................................................... 27
Modem or ISDN Terminal Adapter Connections ................................................ 27
Changing Between MMI and Modem Connection .............................................. 27
Remote Communications .......................................................................................................................................................... 28
Modem Requirements ............................................................................................ 28
No Set-up for Standard Modem Behavior............................................................... 28
Automatic Baudrate Synchronization...................................................................... 28
Auto / Manual Answer Detection ............................................................................ 28
Resetting the Modem.............................................................................................. 28
Set-up for Special Modem Behavior ....................................................................... 28
Set-up for In-house Telephone Systems ................................................................ 28
Set-up for Limited Communication Speed.............................................................. 29
Troubleshooting...................................................................................................... 29
TCP/IP Dial-Up via TCP/IP Modem XM500 ............................................................ 29
GSM Communication (Europe, only) ........................................................................................................................................ 29
M20T Safety Precautions ....................................................................................... 29
Required Third-Party Equipment ............................................................................ 29
Serial Cable........................................................................................................ 30
GSM Antenna Requirements ............................................................................. 30
Antenna Examples ............................................................................................. 30
GSM Antenna Installation ....................................................................................... 31
M20 Terminal Set-up .............................................................................................. 31
Meter-Bus Connection ............................................................................................................................................................... 33
Meter-Bus Connection Procedure...................................................................... 33
Start-up Sequence...................................................................................................................................................................... 35
Controller Setup...................................................................................................... 35
B-Port ................................................................................................................. 36
C-Bus ................................................................................................................. 36
LON-Bus (i.e. LonWorks Network)..................................................................... 36
Meter-Bus........................................................................................................... 36
Modem Communication ..................................................................................... 36
Select Application ................................................................................................... 37
Request Download ................................................................................................. 38
Datapoint Wiring Check.......................................................................................... 38
EXCEL 50 INSTALLATION INSTRUCTIONS
5 EN1B-0101
REVISION OVERVIEW
On the following pages changes have been made compared to the previous release of this document:
Page: Change:
13 Added section "Lightning Protection"
Pull-up resistor disabled.
14, 15 Changed Fig. 24, Fig. 25, and Fig. 26
16 NO/NC attribute.
23 Added XD52-FC and XD52FCS.
28 Added Reset Modem available in System Info sequence, added note ISDN for Europe, only.
29 Added “Europe, only” for GSM, added comment about separate telephone numbers for voice and data.
33 Added alternate way to verify signal quality, new note about PUK, new step 15.
35 New Start-up Sequence.
29 Added section "TCP/IP Dial-Up via TCP/IP Modem XM500"
GENERAL
Safety Instructions
• When performing any work (installation, mounting,
start-up), all instructions given by the manufacturer and
in particular the safety instructions provided in the In-
stallation Instructions are to be observed.
• The Excel 50 Controller may be installed and mounted
only by authorized and trained personnel.
• If the unit is modified in any way, except by the manu-
facturer, all warranties concerning operation and safety
are invalidated.
• Make sure that certain local standards and regulations
are observed at all times. Examples of such regulations
are VDE 0800 and VDE 0100.
• Use only accessory equipment that comes from or has
been approved by Honeywell.
• Before the system is dismantled, disconnect the power
supply. Do this by removing the terminal block or by in-
stalling an additional 3rd-party switch onto the DIN-rail
close to the controller; see the following caution and
note.
CAUTION
Disconnect the power supply before you start to in-
stall the Excel 50 Controller. Do not reconnect the
power supply until you have completed installation.
IMPORTANT
To comply with CE requirements, devices with a
voltage in the range of 50 to 1000 Vac or 75 to
1500 Vdc which are not provided with a supply
cord and a plug or with other means for discon-
nection from the supply having a contact
separation of at least 3 mm in all poles, must have
the means for disconnection incorporated in the
fixed wiring.
CAUTION
Disconnect the power supply before removing or
plugging in the application module.
EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101 6
Hardware Overview
Fig. 1. Excel 50 Controller housing.
Fig. 2. Screw terminal blocks.
Fig. 3. Phoenix terminal blocks.
Fig. 4. Fuse, 4 A quick-acting (behind Terminal Block A)
12345
9678
PW3
M+ M-
On Short Slave
M+ M-
M-Bus
M+ M-
Power RS232C
V+ V- RX TX
Fig. 5. Application module. Fig. 6. Meter-Bus adapter.
Fig. 7. Mounting accessories.
Version Overview
Housing:
With Man-Machine-Interface (MMI)
Without MMI
Application Module:
Standalone (EPROM)
Standalone (Flash-EPROM)*
C-Bus (Flash-EPROM)*
C-Bus/serial port for Meter-Bus (Flash-EPROM)*
LONWORKS network (Flash-EPROM)*
C-Bus/LONWORKS network (Flash-EPROM)*
*Version can be upgraded by firmware. Firmware with
integrated modem communication is available for down-
loading to the controller.
Mounting:
Front door
Cabinet, front side facing DIN-rail
Cabinet, back side facing DIN-rail
Terminals:
Screw Terminal blocks
Phoenix Terminal blocks for flat strip cabling
EXCEL 50 INSTALLATION INSTRUCTIONS
7 EN1B-0101
Dimensions
7.79 in. (198 mm)
5.90 in. (150 mm)
3.19 in. (81 mm)
2.76 in. (70 mm)
CUTOUT
7.32 in. (186 mm)
CUTOUT
5.43 in. (138 mm)
0000042a
PORT A PORT B
FUSE HARDWARE
RESET
A
DJ. FOR
LCD DISPLAY
PORT FOR
APPLICATION
MODULE
2.83 in. (72 mm)
3.94 in. (100 mm)
A
PPLICATION
MODULE
C-BUS PORT
SERIAL -PORT
STANDARD DIN-CUTOUT
FAST ACCESS
KEYS
BASIC FUNCTION KEYS
LCD DISPLAY
1.34 in.
(34 mm)
1.34 in.
(34 mm)
3.34 in. (85 mm)
3.34 in. (85 mm)
DIN-RAIL
MOUNTING
CLIP
DIN-RAIL
MOUNTING
CLIP
3.82 in. (97 mm)
4.96 in. (126 mm)
4.17 in. (106 mm)
1
1
= DIN-rail clip position when installed
without MMI (connectors to front).
2
2
= DIN-rail clip position when installed
with MMI
(
MMI to front
)
.
Fig. 8. Dimensions.
EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101 8
MOUNTING
If the Excel 50 Controller has an MMI, the housing is
mounted either in the front door of a cabinet or on a DIN-rail
with the back facing to the DIN-rail.
The controller without an MMI is mounted on a DIN-rail with
the front facing to the DIN-rail.
Table 1. Mounting Versions.
MMI Version Where
mounted
Necessary accessory*
Front door Cutout in
front door
XL 50 ACC3 - Rubber
sealing ring and front door
mounting clamps
Yes
Inside cabinet DIN-rail DIN-rail mounting clips
No Inside cabinet DIN-rail DIN-rail Mounting clips
*The DIN-rail mounting clips are part of the delivery. The
Accessory kit XL 50 ACC3 for front door mounting must be
ordered separately.
Housing
Front Door
1. Choose the position of the controller in the front door.
Observe the minimum and maximum distances to other
devices in the front door.
2. Cut a rectangle measuring 7-21/64 in. x 5-7/16 in.
(186 mm x 138 mm) out of the front door (standard DIN
cutout).
Fig. 9. Front door cutout dimensions.
3. Insert the rubber sealing ring into the gap around the
front plate of the Excel 50 Controller.
Fig. 10. Inserting sealing ring.
4. Insert the controller into the cutout in the front door.
Fig. 11. Inserting controller in front door cutout.
EXCEL 50 INSTALLATION INSTRUCTIONS
9 EN1B-0101
5. Attach Front Door Mounting clamps on both sides of
the controller and tighten the screws with a screwdriver
as is shown in Fig. 12.
Fig. 12. Fixing controller with front door
mounting clamps.
Inside Cabinet without MMI
1. Break plastic tabs covering the slots on the controller
for the DIN-rail mounting clips using a screwdriver.
2. Attach the DIN-rail mounting clips to the housing as is
shown in Fig. 13.
3. Mount the controller on the DIN-rail as is shown in Fig.
13.
Fig. 13. Cabinet mounting without MMI.
EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101 10
Inside Cabinet with MMI
The screw terminal blocks and the switch for the bus ter-
mination cannot be accessed after the controller with MMI is
mounted on the DIN-rail.
Although the Flat Strip cables and the Bus Terminal socket
can still be plugged in and unplugged, it is easier to do the
complete installation before mounting the controller on the
DIN-rail:
1. Plug in the application module as is shown in Fig. 14.
2. Read the complete chapter "Installation" carefully.
3. Depending on which terminal block type you have
chosen:
— Follow the instructions from chapter "Screw
Terminal Block Installation Procedure".
or
— Follow the instructions from chapter "Phoenix Ter-
minal Block Installation Procedure".
4. Optional: Connect the C-Bus to the application module
as described in chapter "C-Bus Connection Procedure"
and/or connect the application module serial port to the
Meter-Bus adapter as described in chapter “Meter-Bus
Connection Procedure”.
5. Break plastic tabs covering the slots on the controller
for the DIN-rail mounting clips using a screwdriver.
6. Attach the DIN-rail mounting clips at the housing as is
shown in Fig. 13.
7. Mount the controller on the DIN-rail. Fig. 14. Cabinet mounting with MMI.
Application Module
CAUTION
Always plug in the application module before
connecting the power supply.
CAUTION
Always disconnect the power supply before
unplugging the application module.
— Plug in the application module until it snaps into the
controller housing.
Fig. 15. Plug-in of application module.
NOTE: If the application module has been replaced or
plugged out and in again, please push the Reset
button (behind I/O terminals) after power on.
EXCEL 50 INSTALLATION INSTRUCTIONS
11 EN1B-0101
INSTALLATION
With the Excel 50, two different types of input/output ter-
minals can be used: Screw terminal blocks for direct wiring
and Phoenix terminal blocks for remote wiring within the
same cabinet.
The installation procedures for the two types are different.
For proper installation, follow these instructions:
1. Read the complete chapter "Installation" carefully.
2. Depending on which terminal block type you have
chosen:
— Follow the instructions from the chapter "Screw
Terminal Block Installation Procedure".
or
— Follow the instructions from the chapter "Phoenix
Terminal Block Installation Procedure".
Fig. 16. Wiring options.
The two screw terminal blocks are attached directly to the
controller housing.
The Phoenix terminal blocks are connected to the controller
via flat strip cables. The use of Phoenix terminal blocks to-
gether with the flat strip cables will reduce the installation
effort as well as wiring mistakes.
Table 2. Terminal blocks.
Name Code No. of terminals
XS 50 Block A 14
Screw terminal block XS 50 Block B 34
XSP 526 22
Phoenix terminal block XSP 534 34
Table 3. Flat Strip Cables.
Length
For Phoenix
terminal block 5 ft (1.5 m) 8 ft (2.5) m 11 ft (3.5 m)
XSP 526 XW 572 XW 573 XW 574
XSP 534 XW 575 XW 576 XW 577
Terminal Details
Block A
Fig. 17. Screw Terminal
Block A.
Fig. 18. Phoenix Terminal
Block A.
EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101 12
Block B
A01
A02
A03
A04
DI1
DI2
DI3
DI4
AI1
AI2
AI3
AI4
AI5
AI6
AI7
AI8
+10V/5mA REF.
DI-POWER
AGND
GND
0
0
0
0
0
0
4
6
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
Fig. 19. Screw Terminal
Block B.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
A01
A02
A03
A04
DI1
DI2
DI3
DI4
AI1
AI2
AI3
AI4
AI5
AI6
AI7
AI8
A
GND
GND
0
0
0
0
0
0
44
+10V/5mA REF.
DI-POWER
Fig. 20. Phoenix Terminal
Block B.
IMPORTANT
The numbering of the Phoenix terminals differs com-
pletely from the screw terminal numbering. Using
screw terminal blocks will be the more common
solution. Therefore, in the following connection
examples, only the connections for screw terminal
blocks are shown. Refer to Table 4 when using
Phoenix terminal blocks.
Table 4. Translation table for screw to Phoenix
terminal numbering.
Block A Block B
Screw Phoenix Screw Phoenix
EXCEL 50 INSTALLATION INSTRUCTIONS
13 EN1B-0101
Cabling
Cable Routing
All signal (input/output, low voltage) cables are communi-
cation circuits in accordance with VDE 0100, VDE 0800 and
local regulations and should therefore be routed separately
from line voltage.
Table 5. Minimum Distances to Line Voltage.
Cable Type Minimum Distance
unshielded cable 4 in. (100 mm)
shielded cable 3/8 in. (10 mm)
IMPORTANT
Avoid joining sensor cables.
Shielding
Fig. 21. Sensor shielding.
Shielding of sensor and actuator cables with low protective
voltages is not necessary if the general guidelines on cable
routing are observed (see "Cable Routing", page 13). If these
guidelines cannot be observed, shielded cable must always
be used. The shielded cable must be grounded as is shown
in Fig. 21.
IMPORTANT
Shielding of I/O cables that are connected to
peripherals such as sensors and actuators must be
grounded at the control cabinet side only in order to
avoid ground loops.
All Honeywell actuators are RFI suppressed in accordance
with VDE 0871/B and VDE 0875/N.
Lightning Protection
Please check with your local Honeywell representative for
information on lightning protection.
Cable Lengths and Cross Sectional Areas
Table 6. Signal types and cross-sectional areas.
Cross-sectional areaType of signal
≤
≤≤
≤ 300 ft
(100 m)
≤
≤≤
≤ 550 ft
(170 m)
≤
≤≤
≤ 1,300 ft
(400 m)
Power supply
(24 Vac)
≤ 16 AWG
(≥ 1.5 mm2)
≤ 14 AWG
(≥ 2.5 mm2)
-
Low-current
signals*
≤ 20 AWG (≥ 0.5 mm2)
*E.g. for 0-10 V sensors, totalizers, digital inputs, 0-10 V
signals for actuators.
IMPORTANT
The maximum length of a signal cable with 24 Vac
supply is 550 ft (170 m). The maximum length of a
two-wire, 0 to 10 Vdc signal cable is 1,300 ft
(400 m). The secondary side of the transformer must
not be connected to earth ground.
TRANSFORMER
MAX. 550 ft (170 m)
MIN. 14 AWG
(
2.5 mm
)
2
PRIMARY
VOLTAGE
Y
GND
24 Vac
224 V
1
0
0
0
0
0
5
6
b
Fig. 22. Cabling of actuator with 24 Vac supply and
max. 550 ft (170 m).
If the distance between the controller and actuator or sensor
with 24 Vac supply is greater than 550 ft (170 m), a separate
external transformer for the actuator or sensor is necessary.
TRANSFORMER
EXTERNAL
TRANSFORMER
PRIMARY
VOLTAGE
MAX. 1300 ft (400 m)
MIN.20 AWG (0.5 mm )
2
24 Vac
230 Vac
120 Vac
230 Vac
120 Vac
0 TO 10 Vdc
GND
PRIMARY
VOLTAGE
24 Vac
00000057d
2
1
Fig. 23. Cabling of actuator with 24 Vac supply from
external transformer and max. 1,300 ft (400 m).
IMPORTANT
We recommend installing a fuse on the secondary
side of the transformer in order to protect the devices
against miswiring.
EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101 14
Analog Inputs
Technical Description
The analog inputs convert data from passive sensors and
active sensors with voltage output. The analog inputs can be
used as current inputs for active sensors, but then an ex-
ternal resistor parallel to the sensor is necessary. It is also
possible to feed digital signals to the analog inputs.
Technical Specification
Number:
Eight analog inputs
Types of input signals:
NTC 20k ohms
0 to +10 V (max. +11 V)
0 (4) to 20 mA (with an external resistor of 499 ohms
±0.25% [see Fig. 24])
Each input is switched automatically via software either as
input for NTC 20k ohms (high impedance) or voltage source
0 to +10V (max. +11V, low impedance).
NTC 20k ohms:
Range -58 °F to +302 °F (-50 °C to
+150 °C)
Voltage source:
Range 0 to 10 V
IMPORTANT
The analog inputs are protected against short circuit
and overvoltage up to 24 Vac and 40 Vdc. If any
input is sourced with more than 40 Vdc or negative
voltage, the other inputs will be influenced. This
could result in wrong values.
Sensors and Transducers
A
GND
0
0
0
0
0
0
6
1
31
33
35
37
39
41
43
45
47
32
34
36
38
40
42
44
46
48
A
I1
A
B
C
A
I6
A
I8
R1
A
CTIVE
SENSOR
TRANSFORMER FOR
ACTIVE SENSOR
1
2
0-10V
0(4) to
20 mA
499
0.25
%
SENSOR
NTC 20 k
A
I2
A
I3
A
I4
A
I5
A
I7
433
3
2
34
31
SAF25
0 - 5 V
I = 1 mA
10 33
11
12
34
31
VMP
0 - 10 V
I = 1 mA
10 Vdc
max. 5 mA
Fig. 24. Analog inputs, sensor connections.
Passive sensors (NTC 20k ohms)
Room temperature sensor RF 20
Inlet temperature sensor VF 20A
External temperature sensor AF 20
Active sensors (0 to 10V):
Duct Humidity Sensor H7011A1000
Duct Humidity Sensor H7012A1009
Active sensors (0 (4) to 20 mA):
Immersion temperature sensor VF 100
Air duct temperature sensor LF 100
Wind sensor:
Wind sensor WS21
Further connections:
Temperature sensor terminal TF26
Solar Sensor SAF 25
VMP Feedback Potentiometer
The characteristic curves for other types of sensors can be
entered manually in the data point description (see Excel 50
User Guide, EN2B-137).
EXCEL 50 INSTALLATION INSTRUCTIONS
15 EN1B-0101
Firmware Release 2.03.xx and older
L
N
A
GND
0
0
0
0
0
6
2
a
31
NORMALLY OPEN
230 Vac/ 50 Hz
120 Vac/ 60 Hz
230 Vac/ 50 Hz
120 Vac/ 60 Hz
L
N
NOT CONNECTED
NORMALLY OPEN
NOT CONNECTED
NORMALLY CLOSED
10 Vdc
max. 10 mA
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
AI1
A
I3
A
I6
A
I8
AI4
A
I2
A
I7
A
I5
Fig. 25. Analog inputs used as digital inputs.
For normally open contacts, a digital signal must be switched
via the changeover contact of an additional relay.
Unconnected analog inputs have a default voltage of 8.5 V.
This is interpreted by the controller as a logical 1. This means
that, in general, no external relay is needed for normally open
contacts.
IMPORTANT
The relay contact must be suitable for switching low
voltage. For long cable distances, the analog input
signal may be sensitive to interference. In this case,
an external relay may also be used for normally
closed contacts.
Firmware Release 2.04.xx
L
N
A
GND
0
0
0
0
0
6
2m
31
POWER
10 Vac
230 Vac/ 50 Hz
120 Vac/ 60 Hz
230 Vac/ 50 Hz
120 Vac/ 60 Hz
L
N
NOT CONNECTED
NORMALLY CLOSED
NOT CONNECTED
NORMALLY OPEN
10 Vdc
max. 10 mA
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
AI1
A
I3
A
I6
A
I8
AI4
31
AI2
31
A
I7
Fig. 26. Analog inputs used as digital inputs.
Table 7. Accuracy of analog inputs with NTC sensors
Range Deviation / ± Kelvin
(without sensor tolerance)
NTC (20k ohms)
-58 to <-40°F (-50 to <-40°C) ≤ 5.5 K
-40 to <-22°F (-40 to <-30°C) ≤ 3.0 K
32 to <-4°F (-30 to <-20°C) ≤ 1.8 K
86 to <14°F (-20 to <-10°C) ≤ 1.1 K
158 to <32°F (-10 to <0°C) ≤ 0.8 K
212 to <50°F (0 to <10°C) ≤ 0.6 K
266 to <122°F (10 to <50°C) ≤ 0.4 K
266 to <158°F (50 to <70°C) ≤ 0.6 K
266 to <194°F (70 to <90°C) ≤ 1.0 K
266 to <212°F (90 to <100°C) ≤ 1.5 K
266 to <248°F (100 to <120°C) ≤ 2.4 K
266 to <302°F (120 to <150°C) ≤ 5.3 K
EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101 16
Digital Inputs
Technical Description
Fig. 27. Input switching voltages.
The digital inputs signals can be DC voltage signals. If an
input voltage is higher than 5 V, the digital signal switches to
logic "1" status. With a hysteresis of 2.5 V, the input signal
must fall below 2.5 V before the digital status switches to
logic "0".
Three out of four digital inputs can be used as totalizers.
Beginning with V2.04.00 firmware, the online point attribute
Normally Open / Normally Closed (NO/NC) defines the
relation between the physical state (open/closed) and its
logical status. See Table 8.
Technical Specification
Number:
4 digital inputs
Type of signals:
DC signal max. 24 Vdc
Input resistance:
10k ohms
IMPORTANT
The digital inputs are protected against short circuit
and overvoltage up to 24 Vac and 40 Vdc.
Parameter requirements:
If the digital inputs are used for normal digital or analog
signals, the signals have to meet the static and dynamic
requirements stated in Table 8 and Table 9.
If three out of four digital inputs are used as totalizers, the
signals at the totalizer inputs have to fulfill the static and
dynamic requirements stated in Table 8 and Table 10 while
the signal at the fourth input has to meet only the static re-
quirements of Table 8.
Table 8. Static Parameters of Digital Inputs.
Contact
Position
NO/NC
attribute
Logical
Status
Input Voltage
Open NO 0 ≤ 2.5 V
Closed NO 1 ≥ 5 V
Open NC 1 ≤ 2.5 V
Closed NC 0 ≥ 5 V
Table 9. Dynamic Parameters of Digital Inputs.
Frequency Pulse
duration
Pause
interval
Bounce
time
max. 0.4 Hz min. 1.25 s min. 1.25 s max. 50 ms
Table 10. Dynamic Parameters of Totalizers.
Frequency Pulse
duration
Pause
interval
Bounce
time
max. 15 Hz min. 20 ms min. 30 ms max. 5 ms
Connection Examples
Fig. 28. Digital inputs, connection examples.
EXCEL 50 INSTALLATION INSTRUCTIONS
17 EN1B-0101
Analog Inputs
Technical Description
Analog outputs can be used, for example, to operate valve or
damper actuators. The characteristic curves for these
actuators can be defined via MMI (see Excel 50 User Guide).
Each analog output can also be used as a digital output.
Technical Specification
Number:
Four analog outputs
Analog output details:
Voltage 0 to 10 V, max. 11 V
Current max. 1 mA
Resolution 8-Bit
Min. step: 0.043 mV
Accuracy ±100 mV ±1 digit
Relay Modules
The relay modules facilitate the control of peripheral devices
with high load via the analog outputs of the controller. The
connection examples (for the relay modules MCD 3 and
MCE 3) are shown here.
IMPORTANT
The external supply of the relay modules must be
24 Vac, the same as of the supply of the controllers.
The analog outputs are protected against
overvoltage up to 24 Vac and 35 Vdc.
Supply:
Several relay modules can be connected in series via the
bridged terminal pair:
24 Vac: Terminals 11/12 of the relay
24 Vac (-): Terminals 13 to 16 of the relay
Fig. 29. Analog outputs, connection of relay MCD 3.
MCD 3:
Relay terminal 17 controls the changeover contact K3.
Relay terminal 18 controls the ON contacts K1, K2.
Ground can be looped through terminals 2/3.
Fig. 30. Analog outputs, connection of relay MCE 3.
MCE 3:
Relay terminal 16 controls the ON contact K3.
Relay terminal 17 controls the changeover contact K2.
Relay terminal 18 controls the changeover contact K1.
EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101 18
Digital Outputs
Technical Description
The digital outputs are switched by a triac that can be
connected directly to an external relay.
Technical Specification
Number:
Six digital outputs
Output stages:
Low signal 0 V
High signal 24 Vac
Type Close, only
Load:
Per output min. 0.01 A
max. 0.8 A
Total max. 2.4 A
Cos ϕ0.5 to 1
IMPORTANT
The digital outputs are protected against short
circuit current via internal fuse, but they are not
protected against overload. All digital outputs are
protected via one fuse, only; if any digital output is
short-circuited, the fuse will be blown and will
interrupt the main power. In that case, the con-
troller does not work. If the CPU is running into the
WATCHDOG caused by a software or hardware
error, all digital outputs will be set to low signal,
which means all digital outputs are inactive.
Beginning with V2.04.00 firmware, the online point attribute
Normally Open / Normally Closed (NO/NC) defines the
relation between the physical state (relay on/off) and its
logical status. See Table 11.
Table 11. Digital Output Parameters.
Relay
ON/OFF
NO/NC
attribute
Logical
Status
Output
Voltage
On NO 1 24V
Off NO 0 0V
On NC 0 0V
Off NC 1 24V
Connection Examples
Fig. 31. Digital outputs, connection of relay.
Fig. 32. Digital outputs, direct connection of 3-position
actuators.
EXCEL 50 INSTALLATION INSTRUCTIONS
19 EN1B-0101
Power Supply
The Excel 50 Controller is powered by an external trans-
former.
Transformer requirements for one Excel 50 Controller:
Voltage 24 Vac ±20%
Current 3 A, if fully equipped (6 DO's x 0.4 A)
2 A, if current of DO's does not exceed 1.8 A
Power 72 VA, if fully equipped
The transformer, already installed in the cabinet, can be used
to supply several controllers, communication devices or peri-
pherals like actuators, etc. if the transformer provides
sufficient power.
Fig. 33. Transformer example.
CRT-Series
Table 12. Number of controllers connected to one
transformer.
Transformer Controller Excel 50
CRT 2 1 (1.8A max.)
CRT 6 2
CRT 12 4
Use quick-acting backup fuse 10 A (or automatic H16 or L16)
to protect transformer primary side. On the primary side of
the CRT 2, there is a fusible output of type M 0.315 A (T)
250 V for the purpose of fine fusing.
Table 13. Overview of CRT Series AC/DC current.
Transformer max. AC current max. DC current
CRT 2 2 A 0.5 A = 500 mA
CRT 6 6 A 1.3 A = 1300 mA
CRT 12 12 A 2.5 A = 2500 mA
Fig. 34. AC/DC current graphs.
1450 Series
All transformers of the 1450 series are designed for 50/60 Hz
AC and have insulated accessory outputs. The transformers
include built-in fuses, line transient/surge protection and AC
convenience outlets and meet NEC class 2 requirements.
Table 14. 1450 Series transformers.
Part #
1450 7287
Primary Side Secondary Side
-001 120 Vac 24 Vac, 50 VA
-002 120 Vac 2 x 24 Vac, 40 VA and
100 VA from separate
transformer
-003 120 Vac 24 Vac, 100 VA and
24 Vdc 600 mA
-004 240/220 Vac 24 Vac, 50 VA
-005 240/220 Vac 2 x 24 Vac, 40 VA and
100 VA from separate
transformer
-006 240/220 Vac 24 Vac, 100 VA and
24 Vdc 600 mA
Standard Transformers
Standard commercially available transformers must fulfill the
following specifications:
Table 15. Requirements for Standard Transformers.
Output voltage Impedance AC current
24.5 Vac to 25.5 Vac ≤ 1.15 ohms max. 2 A
24.5 Vac to 25.5 Vac ≤ 0.40 ohms max. 6 A
24.5 Vac to 25.5 Vac ≤ 0.17 ohms max. 12 A
EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101 20
Screw Terminal Block Installation
1. Make sure that the power supply of the cabinet is
disconnected.
2. Make sure that the power supply of the cabinet is
disconnected and the application module is plugged in
the housing.
3. Choose the minimum cross sectional areas for all
cables to and from sensors, actuators, valves, relays,
etc. you want to connect to the Excel 50 Controller from
Table 6.
4. Connect sensors, transducers, etc. to the analog input
terminals.
Fig. 35. Connecting a cable to a screw terminal.
IMPORTANT
When installing a separate external transformer, do
not connect the cabinet ground to the controller
system ground.
5. If the distance between the controller and an actuator
or sensor with 24 Vac supply is greater than 550 ft
(170 m):
a) Choose a transformer from the transformers listed
in chapter "Power Supply".
b) Connect the chosen transformer directly to the
actuator or sensor.
6. Connect sensors, transducers, etc. to the digital input
terminals.
7. Connect valves, actuators, relays, etc. to the analog
output terminals.
8. Connect relays, actuators etc. to the digital output
terminals.
9. Select one of the transformers of the CRT series or
1450 series from the Table 13 or Table 14 or take a
commercially available standard transformer fulfilling
the requirements from Table 15.
10. Make sure that the application module is attached to
the controller housing.
WARNING
High Voltage
Risk of death or electrical shock.
— Do not connect line power supply directly to the
terminals.
— Insulate devices with 120 Vac / 230 Vac by a
transformer.
IMPORTANT
The transformer feeding the Excel 50 Controller
must be in the same cabinet. For the selection of the
transformer the max. DC current must be considered
if field devices with DC load are used.
The secondary side of the transformer must not be
connected to earth ground.
11. Connect the 24 Vac (-) on the secondary side of the
transformer to terminal 1 on Screw Terminal block A.
12. Connect the 24 Vac on the secondary side of the
transformer to terminal 2 on Screw Terminal block A.
Fig. 36. Connecting the power supply.
IMPORTANT
If there already are additional transformers, for
example supplying actuators or active sensors:
— Connect the 24 Vac (-) (secondary side) of the
transformers together.
13. Attach the terminal blocks to the housing as is shown in
Fig. 37.
Fig. 37. Attaching of screw terminal blocks.
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