A Off (Ready)
C Pressure protection active
E Protection response (parameter 36-1 Pressure Sensor,
parameter 36-4 High Pressure, parameter 36-5 Low Pressure)
2 Pressure protection response delay (parameter 32-3 High
Pressure Response Delay and parameter 32-6 Low Pressure
Response Delay)
B Start signal
D Protection event (parameter 32-1 High Pressure Trip Level and
parameter 32-4 Low Pressure Trip Level)
1 Pressure protection start delay (parameter 32-2 High Pressure
Start Delay and parameter 32-5 Low Pressure Start Delay)
Illustration 4: Operation - Pressure Protection
6.4.1.1 Using an Analog 4–20 mA Sensor
Context:
An analog 4–20 mA sensor provides protection and monitoring.
Procedure
1. Connect the sensor to B23, B24.
2. Set parameter 30-1 Pressure Sensor Type to Analog.
3. Set parameters 30-2 to 30-4 according to the sensor specifications.
4. Set parameters 32-1 to 32-6, parameter 36-1 Pressure Sensor, and parameters 36-4 to 36-5 as required.
6.4.1.2 Using a Switch Sensor
Context:
A switch sensor provides protection only.
Procedure
1. Connect the low-pressure sensor to C33, C34 and the high-pressure sensor to C43, C44.
2. Set parameter 30-1 Pressure Sensor Type to Switch.
3. High-pressure protection: Set parameters 32-2 to 32-3, parameter 36-1 Pressure Sensor, and parameter 36-4 High Pressure as required.
4. Low-pressure protection: Set parameters 32-5 to 32-6, parameter 36-1 Pressure Sensor, and parameter 36-5 Low Pressure as required.
Parameter 32-1 High Pressure Trip Level and parameter 32-4 Low Pressure Trip Level are not used with a switch sensor.
Configuration
Installation Guide | Pumping Smart Card
AN279052730268en-000102 / 175R1183 | 17
Danfoss A/S © 2018.10
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