Danfoss MCE126A Current Amplifier User guide
- Type
- User guide
MCE126A
Current Amplifi er
Technical
Information
Phased Out Products
2
BLN-96-9212-E • Rev. C • 11/2002
MCE126A Current Amplifi er
Technical Information
Overview
© 2001, Sauer-Danfoss
Sauer-Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Sauer -Danfoss reserves the
right to alter its products without prior notice. This also applies to products already ordered provided that such alterations can be made without
subsequent changes being necessary in specifi cations already agreed. All trademarks in this material are properties of the respective companies.
Sauer-Danfoss and the Sauer-Danfoss logotype are trademarks of the Sauer-Danfoss Group. All rights reserved.
DESCRIPTION
TECHNICAL DATA
The Sauer-Danfoss MCE126A Current Amplifi er converts analog input signals like current
or voltage into a proportional output current, that will drive Sauer-Danfoss axial piston
pumps with an Electrical Displacement Control (EDC).
An anti stall profi le may be superimposed for applications using an electric motor to
drive the pump.
FEATURES • Working modes are selectable externally.
• Anti stall function for electrical motor.
• The powered load may vary from 10 Ω to 40 Ω.
• 12 V
DC
or 24 V
DC
supply voltage.
• Reverse polarity and short circuit protected.
• Withstands vibration and shock.
ORDERING INFORMATION
Controller Supply voltage Id. No.
[V
DC
]
MCE126A1001 12 or 24 316372
Supply voltage: 12 V
DC
or 24 V
DC
Ripple: ≤ 10 %
Power load: 4,2 W or 8,4 W
Maximum output current range: 60 mA to 150 mA (with loads ranging from 10 Ω - 40 Ω)
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BLN-96-9212-E • Rev. C • 11/2002
MCE126A Current Amplifi er
Technical Information
Block Diagram
BLOCK DIAGRAM
S00432
DC
12V
DC
24V
V
t
Voltage regulator
R23
choice
or
100 Ω ... 100kΩ
I
V
V
t
R26 R34 R35
R9
K1.2
K1.1
S1
K1
R13
Battery
12 or 24V
DC
-+
F
EDC
3~
Switch S1 closed: Potentiometer mode
F-N-R
switch
+
-
+-
1
1
A
B
10
12
28
26
4
15
18
6
8
22
20
30
31
32
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BLN-96-9212-E • Rev. C • 11/2002
MCE126A Current Amplifi er
Technical Information
Theory of Operation
THEORY OF OPERATION The MCE126A Current Amplifi er is able to convert DC signals which may be from 0 mA
to 20 mA or 4 mA to 20 mA into a current signal (0 mA - 150 mA) output. The MCE126A
is a "current sourcing" device.
With external mode switch S1 it is possible to switch to a potentiometer (100 Ω to
100 kΩ) or voltage (0 V
DC
to 10 V
DC
) input.
The current output curves are adjustable according to fi gures 1 and 2.
To protect an electrical motor against overload, an anti stall function may be superimpo-
sed. For this mode a current/voltage converter is necessary. The maximum input current
of the motor is adjustable with the setpoint potentiometer R26. Depending on the over-
load characteristic of the motor the control parameters are adjustable with R34 and R35
(see fi gure 3).
The anti stall control algorithm is shown in fi gure 4.
OPERATION DIAGRAMS
Figure 1: Current mode
Figure 2: Potentiometer mode
S01748_03e
S01748_04
Figure 3: adjustable parameters
Figure 4: anti stall control algorithm
S01748_02
S01748_01
Note: Without anti stall control function potentiometers R34 and R35 must be turned
ccw maximum.
Ι
Ι
Ι
IN
MAX
0
4mA
20mA
0mA...20mA mode
4mA...20mA mode
R13
R9
Ι
Ι
E-MOTOR
0
R26
R34
R35
Ι
Ι
POT.
MAX
0
100%
R13
Ι
E-MOTOR
0
t
Ι
100%
0 t
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BLN-96-9212-E • Rev. C • 11/2002
MCE126A Current Amplifi er
Technical Information
DIMENSIONS
S00295
S00386
Dimensions and Connection Diagram
CONNECTION DIAGRAM
100
160
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
R35
R34
R26
R13
R23
R9
A
B
C
D
E
F
G
H
V3
EDC
0 (4mA) - 20mA
-
+
V
I
Current-
voltage
converter
S1
100Ω ... 100kΩ
cw
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
Switch S1 closed: Potentiometer mode
F
F
Battery
12 or 24V
DC
+-
choice
DC
12V
DC
24V
or
R35
R34
R26
R13
R23
R9
A
B
C
D
E
F
G
H
V3
1
1
A
B
Phased Out Products
Sauer-Danfoss Hydraulic Power Systems
– Market Leaders Worldwide
Sauer-Danfoss is a comprehensive supplier providing complete
systems to the global mobile market.
Sauer-Danfoss serves markets such as agriculture, construction, road
building, material handling, municipal, forestry, turf care, and many
others.
We offer our customers optimum solutions for their needs and
develop new products and systems in close cooperation and
partner ship with them.
Sauer-Danfoss specializes in integrating a full range of system
components to provide vehicle designers with the most advanced
total system design.
Sauer-Danfoss provides comprehensive worldwide service for its
products through an extensive network of Authorized Service
Centers strategically located in all parts of the world.
Sauer-Danfoss (US) Company
2800 East 13th Street
Ames, IA 50010, USA
Phone: +1 515 239-6000, Fax: +1 515 239-6618
Sauer-Danfoss (Neumünster) GmbH & Co. OHG
Postfach 2460, D-24531 Neumünster
Krokamp 35, D-24539 Neumünster, Germany
Phone: +49 4321 871-0, Fax: +49 4321 871-284
Sauer-Danfoss (Nordborg) A/S
DK-6430 Nordborg, Denmark
Phone: +45 7488-4444, Fax: +45 7488-4400
Sauer-Danfoss (US) Company
3500 Annapolis Lane North
Minneapolis, MN 55447, USA
Phone: +1 763 509-2084, Fax: +1 763 559-0108
www.sauer-danfoss.com
OUR PRODUCTS
Hydrostatic transmissions
Hydraulic power steering
Electric power steering
Closed and open circuit axial piston
pumps and motors
Gear pumps and motors
Bent axis motors
Orbital motors
Transit mixer drives
Planetary compact gears
Proportional valves
Directional spool valves
Cartridge valves
Hydraulic integrated circuits
Hydrostatic transaxles
Integrated systems
Fan drive systems
Electrohydraulic controls
Digital electronics and software
Electric motors and inverters
Sensors
BLN-96-9212-E • Rev. C • 11/2002
Phased Out Products
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Danfoss MCE126A Current Amplifier User guide
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