PowerDeck shelves: Instructions
®
990-9070 Rev 1 Page 1 of 8 May 2001
Installation and Operating
Instructions for
MS14A and MS14B PowerDeck Shelves
PowerDeck shelves: Instructions
®
990-9070 Rev 1 Page 2 of 8 May 2001
1. Safety
1.1 Warnings
1.1.1 General
When installing the power shelf it is important to observe these installation instructions, in addition:
• The requirements of the specification IEC950 / EN60950 must be met.
• All local and national wiring regulations for connection to the supply must be met.
There are no user serviceable parts contained in this equipment and all installation and maintenance must be
performed by qualified service personnel.
1.1.2 Mains supply
PowerDeck shelves are suitable for wiring to TN-S power supply systems. Suitable power systems include:
• single phase, two wire 230V with protective earth
• single phase, three wire 110V/220V with protective earth
• three phase, three wire 208V with protective earth
• three phase, four wire 415V with protective earth.
All the above power systems must be 50Hz or 60Hz nominal. For safety and correct operation, the shelf must be
wired in accordance with the information provided in section 3 of this instruction book.
1.1.3 High leakage current
The earth leakage current from this equipment exceeds 3.5mA; the earth connection must be made prior to
connecting to the supply.
1.1.4 Energy hazard
The output power is greater than 240VA. Potentially lethal voltages and sources of energy are present on the
busbars and PCB tracking that is exposed when the back panel is removed for shelf installation and wiring.
Ensure that all supplies are switched off and tested for zero voltage before installation or maintenance is started.
1.1.5 SELV
The output of rectifiers MRF14H54#N** and MRF17H54#N** exceed SELV limits (>60V d.c.) The output of
all other rectifiers is reliably SELV. The character # may represent A or B or D, the * characters represent any
suffixes added to indicate variants of the standard product (e.g. different factory settings or variants of the signals
functions).
1.1.6 Weight
The mass of the laden unit exceeds 10kg therefore the laden unit presents a hazard due to mass. The
Manual Handling of Loads Regulations 1993 require that all person working on the equipment are familiar with
the Regulations , that they take care to minimise risk of injury to themselves or others, that they are properly
trained, and that the correct equipment is used.
1.2 Caution
Double pole / neutral fusing is used in the rectifiers.
1.3 The CE Mark
This power shelf is CE marked to the European Low Voltage Directive (LVD) 73/23/EEC amended by 93/68/EEC,
relating to the Safety of Electrical Equipment. This power shelf is designed for incorporation within apparatus. For
user safety, the enclosing apparatus must protect the user against accidental contact with any electrical hazard,
cooling fans etc associated with the power shelf.
PowerDeck shelves: Instructions
®
990-9070 Rev 1 Page 3 of 8 May 2001
2. Components and Ratings
2.1 Shelves and accessories
Two PowerDeck shelves are available for use with the MRF1400 and the MRF1700 series of rectifiers. Both are
3U (5.25") high, and suitable for use in 12" deep equipment racks.
• The MS14A accommodates up to 3 rectifiers, and fits into 19" racks.
• The MS14B accommodates up to 4 rectifiers, and fits into 23" racks.
Both are supplied with front mounting flanges.
Mid mount brackets for relay frame style mounting are available as an alternative, APC part number
1MS14MIDMOUNT
Blanking panels for unused rectifier positions are also available, APC part number 1MS14P
2.2 Suitable rectifiers
Any of the rectifiers listed in table 2.1 may be fitted into the MS14A or MS14B shelves, where the character #
may represent A, B or D, these being the various signal options. The * characters represent any suffixes added to
indicate variants of the standard product (e.g. different factory settings or variants of the signal functions).
Product Output
voltage
Maximum
current
Maximum
power
Safety
1MRF14H54#** 54.5V 25A 1400W SELV
1MRF14H54N#** 54.5V 25A 1400W Non-SELV
1MRF17H54#** 54.5V 30A 1700W SELV
1MRF17H54N#** 54.5V 30A 1700W Non-SELV
Table 2.1
2.3 Ratings
Shelves fitted with MRF14H54* rectifiers have maximum ratings shown in table 2.2 below (for a fully configured
shelf containing the maximum number of rectifiers shown in the table).
Parameter MS14A MS14B
Input voltage 230V 230V
Input frequency 45-65Hz 45-65Hz
Input current (single phase connection) 30A 30A
Input current (three phase connection) 10A 20A
Output voltage 54.5V 54.5V
Output current 75A 100A
Output power 4200W 5600W
Environment 65ºC max 65ºC
Number of rectifiers 3 4
Table 2.2
PowerDeck shelves: Instructions
®
990-9070 Rev 1 Page 4 of 8 May 2001
Shelves fitted with MRF17H54* rectifiers have maximum ratings shown in table 2.3 below (for a fully configured
shelf containing the maximum number of rectifiers shown in the table).
Parameter
MS14A
MS14B
Input voltage 230V 230V
Input frequency 45-65Hz 45-65Hz
Input current (single phase connection) 30A 30A
Input current (three phase connection) 10A 20A
Output voltage 54.5V 54.5V
Output current 90A 120A
Output power 5100W 6800W
Environment 45ºC max 45ºC max
Number of rectifiers 3 4
Table 2.3
PowerDeck shelves: Instructions
®
990-9070 Rev 1 Page 5 of 8 May 2001
3. Mechanical and Electrical Features
The key features of the MS14A and MS14B shelves are shown below in figure 3.1. The rear views show that the
MS14A and MS14B are identical except that the 4
th
rectifier incorporated into the 23 inch MS14B shelf is
mounted at the right hand side of the shelf (left of rear view).
Figure 3.1
PowerDeck shelves: Instructions
®
990-9070 Rev 1 Page 6 of 8 May 2001
4. Customer Wiring
4.1 AC Connection
Each rectifier position in the shelf is provided with a separate two way terminal block for the AC mains connection
mounted on the rectifier's backplane board. This board is illustrated in figure 4.1, where SK4 is the AC mains
connection terminal block, and the connections are labelled AC1 and AC2. The terminal blocks should be wired
with 16AWG UL wire (1.3mm
2
) in accordance with table 4.1.
Type Mains system Mains L to N
voltage rms
Mains L to L
voltage rms
AC1 AC2
1
Single phase,
2 wire + PE
230V L N
2
Single phase,
3 wire + PE
110V 220V L L
3
Three phase,
3 wire + PE
115V 208V L L
4
Three phase,
4 wire + PE
230V 415V L N
PE = PROTECTIVE EARTH L = MAINS LIVE N = MAINS NEUTRAL
A 4mm stud is provided for the earth connections.
Table 4.1
The shelf is designed for 50/60Hz systems. Referring to table 4.1, if the shelf is wired as type 1, live and neutral
are taken to AC1 and AC2 respectively. If the shelf is wired as type 2 (centre-tapped 220V), the two lives are
taken to AC1 and AC2 respectively. If the shelf is wired as type 3, the load should be distributed across phases,
L1 and L2 to rectifier 1 (AC1 and AC2), L2 and L3 to rectifier 2, L3 and L1 to rectifier 3 etc. If the shelf is wired as
type 4, the load should be distributed across phases, L1 and N to rectifier 1 (AC1 and AC2), L2 and N to rectifier
2, L3 and N to rectifier 3 etc.
AC1 and AC2 wiring must not be daisy chained between terminal blocks. Each rectifier must have its supply
wiring taken from its backplane board to a distribution panel adjacent to the shelf. This wiring should be inserted
in the cable clips provided in the rear of the shelf, and should exit the shelf via the protected holes on the right
side as illustrated in figure 3.1.
An external electrical disconnect device must be provided. This device must disconnect all live poles of the
power supply to the shelf. External fusing must be provided by the user as part of the shelf installation. Each
16AWG wire (feeding a backplane board) which is fed from a live pole should be fused at 15A, using a fuse type
which is approved for the local wiring regulations.
Protective earth wiring should be in the range 10mm
2
– 16mm
2
and must be taken directly to the 6mm stud on
the inner panel of the shelf. As the earth leakage current from this equipment exceeds 3.5mA, the earth
connection must be made prior to connecting to the supply
Figure 4.1
PowerDeck shelves: Instructions
®
990-9070 Rev 1 Page 7 of 8 May 2001
4.2 DC Connection
The outputs from the rectifier modules are wired from the backplane PCBs and commoned together on busbars.
Connection is by two 8mm studs, pitched at 25.4mm, on each busbar. A suitable double hole lug is
recommended.
4.3 Signals Interface
The signals from each rectifier are connected via ribbon cables from each backplane PCB on to a common node
card inside the shelf. There are two external interface connectors on this card, one 20 way connector (PL6) for
use with the APC DM2000 power monitoring system, and a 26 way General Interface connector with a different
set of general purpose signals (PL5). These connectors are illustrated in figure 5.1 overleaf and their pin out is
given in table 4.2 below.
Customer connection to the General Interface PL5 should use connector type: polarised 26way female socket
connector with 2.54mm x 2.54mm pin centres and strain relief e.g. Thomas & Betts part number 636-2641.
DM2000 interface PL6 General Interface PL5
PL6
pin
Signal Type PL10
pin
Signal Type
1 Fan fail IOC output 1 One or more rectifiers in fan fail IOC output
2 Overtemperature IOC output 2 One or more rectifiers in standby IOC output
3 Thermal Control IOC output
3 One or more rectifiers in
overtemperature
IOC output
4 Overvoltage IOC output
4 One or more rectifiers in thermal
control
IOC output
5 Current Limit IOC output 5 One or more rectifiers in overvoltage IOC output
6 Signals common 6 One or more rectifiers in current limit IOC output
7 Rectifier 1 fail Relay N/O 7 One or more rectifiers output healthy IOC output
8 Rectifier 2 fail Relay N/O 8 One or more rectifiers input healthy IOC output
9 Rectifier 3 fail Relay N/O 9 One or more rectifiers Iout > 15% IOC output
10 Rectifier 4 fail Relay N/O 10 Signals common
11 No connection 11 One or more rectifiers failed (0V=fail) Relay
12 Negative sense 12 Current share Control buss
13 Current Share Control buss 13 Voltage trim Control buss
14 Voltage trim Control buss 14 Remote shutdown (+ve) Opto input
15 Remote shutdown Opto input 15 Negative sense
16 Rectifier 1 current signal 5.1k source 16 Current Monitor (summed 0.01V/amp) 5.1k source
17 Rectifier 2 current signal 5.1k source 17 Positive sense
18 Rectifier 3 current signal 5.1k source 18 Auxiliary supply +10V
19 Rectifier 4 current signal 5.1k source 19 Post Mate Enable
20 No connection 20 Programme Down (Battery Test) Opto input
21 Set boost Opto input
22 One or more rectifiers in boost IOC output
23 Current Limit Program
24 Not connected
25 Not connected
26 Not connected
Note 1: IOC output = isolated open collector output
Note 2: Signals common (PL6 pin 6, PL10 pin 10) = return for all IOC signals, relay contacts, opto inputs and auxiliary supply.
See information about jumper J2 below.
Table 4.2
PowerDeck shelves: Instructions
®
990-9070 Rev 1 Page 8 of 8 May 2001
5. Settings and adjustments
5.1 Jumper Links
The node card has two jumper links fitted, J1 and J2, these are illustrated in figure 4.1 below which shows a
section of the node card. The configuration of these should be set when the shelf is installed using the
information table 5.1 below.
Jumper Controls Operation when fitted Operation when NOT fitted
J1 Post mate enable Rectifiers run with no additional connections
PL5 pin 19 must be connected to PL5 pin 15
for the rectifiers to run. Can be used as
remote inhibit function.
J2 Signal ground
Signals common (PL6 pin 6, PL5 pin 10) is
connected to negative sense (PL6 pin 12,
PL5 pin 15).
Signals common isolated from negative
sense.
Table 5.1
5.2 Output voltage setting
Potentiometer P1 on the node card adjusts the output voltage of all the rectifiers simultaneously, its position is
illustrated in figure 5.1 below. It is also adjustable through a hole in the shelf rear panel. The Vtrim signal being
fed to the rectifiers can be measured on TP1 (TP2 is 0V). An input of 5.0V results in no adjustment of the rectifier
voltages.
Figure 5.1
J1,J2
P1 TP2 TP1 PL5 PL6
-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
8
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