MCE120A
PI Controller
Technical
Information
Phased Out Products
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BLN 96-9207-E • Rev. C • 10/2002 • OBSOLETE
MCE120A PI Controller
Technical Information
O
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 MCE120A PI Controller (for "Proportional-Integral") allows a constant
closed loop speed control of a hydrostatic transmission. This means that the control
compensates for hydrostatic effi ciencies and variable input speeds.
The current source output driver is able to drive Electrical Displacement Controls (EDC)
of the type MCV104A, MCV105A or MCV111B.
FEATURES • Lost of feedback detection.
• Feedback ratio adjustable.
• Available with enclosure.
• 12 V
DC
or 24 V
DC
supply voltage.
• Reverse polarity and short circuit protected.
• Withstands vibration and shock.
ORDERING INFORMATION
Controller Supply voltage Feedback Id. No.
MCE120A1007 12 V
DC
100 Hz - 500 Hz 625921
MCE120A1022 24 V
DC
100 Hz - 500 Hz 668947
MCE120A1015 24V
DC
0 V
DC
- 9 V
DC
647743
Supply voltage: 12 V
DC
or 24 V
DC
Ripple: ≤ 10 %
Power load: 3,6 W or 7,2 W
Max. output current: 250 mA at 25 Ω
Alarm contact: I
MAX
= 5 A
V
MAX
= 250 V
P
MAX
= 100 W
Setpoint potentiometer: 5 kΩ
Setpoint: see ordering information
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BLN 96-9207-E • Rev. C • 10/2002 • OBSOLETE
MCE120A PI Controller
Technical Information
OBSOLETE
Block Diagram
BLOCK DIAGRAM
S00427
V
t
Voltage regulator
Lost of
feedback
Alarm
contact
External
setpoint
potentiometer
t
α
P
R22
Proportional gain
V
t
R24
Integration time
V = 10V
STAB
V
STAB
2
0V
Integration
blocking
-
+
LED
V15
R11
Feedback ratio
Controller
OFF/ON
t
EDC
MCV104A
MCV105A
MCV111B
PPU
Battery
-
+
f
U
F
Shown position: Controller OFF
1
1
A
B
Engine
32
30
22
14
16
12
V
10
8
4
2
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BLN 96-9207-E • Rev. C • 10/2002 • OBSOLETE
MCE120A PI Controller
Technical Information
OBSOLET
DIMENSIONS
S00281
S00381
Theory of Operation, Dimensions and Connection Diagram
THEORY OF OPERATION An external command signal (setpoint potentiometer) proportional to the desired hydro-
static transmission speed is input to the MCE120A PI Controller.
A ramp function for acceleration and deceleration is provided. The command is then
compared with the converted feedback signal (e.g. RPM, pressure). The error signal is then
passed to the proportional and integral stages.
The calculated signal is converted to an output current which is varied by the Controller
to maintain the desired speed of the hydraulic motor output shaft. To get a stable control
loop at low setpoint, a low limit threshold must be crossed before the integral stage is
activated.
A loss of feedback circuit monitors the ratio between setpoint and feedback. If an exces-
sive error signal exists for an extended duration of time, the Controller will shut down
the output and close the alarm contact. Activating the Controller OFF/ON switch will
effect a reset.
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
R1a
R24
R22
R11
V15
HGFEDCBAMP
L
K
I
MP
EDC
MCV104A
MCV105A
MCV111B
PPU
+
-
Battery
+-
max
min
Setpoint
potentiometer
5kΩ
F
Controller OFF/ON
1
Shown position: Controller OFF
1
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
R1a
R24
R22
R11
V15
HGFEDCBAMP
L
K
I
MP
A
B
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BLN 96-9207-E • Rev. C • 10/2002 • OBSOLETE
MCE120A PI Controller
Technical Information
OBSOLETE
Notes
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
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pumps and motors
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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-96-9207-E • Rev. C • 10/2002 • OBSOLETE
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