Danfoss iC7 Series Operating Manual page 48

iC7 Series Cooling Modules
Operating Guide
8 Control Unit
8.1 Control Compartment Overview
The control compartment contains all the control electronics, protective devices, auxiliary voltage transformer, and power supply.
All control devices for the user are on the control compartment door.
The red-and-yellow main switch (-QB0) connects the main power to the cooling module. The auxiliary power is also connected with
the main switch, except in the situation where the auxiliary power is supplied externally.
The Run-Stop-Remote switch (-SF1) controls pump operation. In the Run position, power is connected to the pump motor through
a contactor and an electronic overload relay. The pump can be stopped by turning the switch to the Stop position. In the Remote
position, the start signal can be given remotely. Refer to the electrical diagrams for remote control.
The pump select switch (-SF2) allows you to select which pump to operate in the dual-pump cooling module. The selection contains
Pump 1, Pump 2, or Auto. In Auto mode, the control unit controls which pump operates.
The Reset button can be used to reset alarms and faults. An alarm is unusual operation that does not stop the pump, and a fault is
unusual operation that stops the pump.
Table 17: Control Compartment Indicator Lights
Indicator light Color
-PF2.1, -PF2.2 White
-PF3 Green
-PF5 Orange
-PF4 Red
There are also potential free changeover relay contacts for Cooling OK, Fault, and Alarm signals. Refer to the electrical diagrams for
connection.
With the control panel, it is possible to modify parameters, monitor the cooling module operation, and clear alarms and faults. Refer
to the application manual for more information.
48 | Danfoss A/S © 2022.02
Status
Indicates pump operation. In the dual-pump cooling module, there are 2 lights, 1 for each pump. In
the service mode, the light blinks.
Indicates that cooling is OK.
Indicates that there is an active alarm.
Indicates that there is an active fault.
Control Unit
AQ339830072437en-000202 / 172F0589