Danfoss MCE127A1000 Proportional Amplifier Owner’s Manual
- May 15, 2024
- Danfoss
Table of Contents
Danfoss MCE127A1000 Proportional Amplifier
DESCRIPTION
- The SAUER-SUNDSTRAND Proportional Amplifier MCE127A…. is used for powering fan drives equipped with proportional actuators.
- The current to the valve depends on a measured temperature.
FEATURES
- Current source.
- Fail Save Cut-Off when sensor leads are broken.
- Reverse polarity and short circuit protection.
- Withstands vibration and shock.
ORDERING INFORMATION
| Device Name | Supply voltage | Id.No. |
|---|---|---|
| MCE127A…. | 24VDC | 504 051 |
TECHNICAL DATA
BLOCK DIAGRAM
THEORY OF OPERATION
- The Proportional Amplifier MCE127A… produces a current to a proportional value to a measured temperature (air or water).
- The temperature is measured by a thermistor which reduces its resistance with rising temperature.
- The outut current is reduced with raising temperature and increased with falling temperature.
- The current is limited to 1.6A and is cut off to 0A when a sensor lead is broken.
DIMENSIONS
CONNECTION DIAGRAM
ADJUSTMENT PROCEDURE
- Choose temperature with a resistor instead of thermistors (see table).
- In air applications turn R20 fully cw for maximum modulation depth.
- In water applications turn R20 fully ccw.
- Adjust the minimum current with R21.
- When adjusting the modulation depth with R20 the minimum current needs to be readjusted.
Table
Documents / Resources
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Danfoss MCE127A1000 Proportional
Amplifier
[pdf] Owner's Manual
MCE127A1000 Proportional Amplifier, MCE127A1000, Proportional Amplifier,
Amplifier
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