1.
2.
3.
4.
5.
6.
1.
Wiring diagram showing ICAD digital outputs wired with customer supplied auxiliary relays
Figure 14: ICAD digital outputs wired with customer supplied auxiliary relays
CUSTOMER SUPPLIED
5
–
24 V DC
K
1
K
2
K
3
K
2
K
1
K
3
K
2
K
1
K
3
K1 : Common Alarm
K2 : ICM fully open
K3 : ICM fully closed
Auxillary relays
Black
Brown
Red
Orange
White
Brown
24 V DC
Power
Supply
+
-
Power
Supply
+
-
Black
Optional UPS/
battery back up
+
Control
Power supply cable
cable
Terminal box
2
1
3
Data cable
2
1
3
2
3
NOTE:
The same 24 V DC power that powers the ICAD can be used with the ICAD digital outputs to power auxiliary relays
(or other small load devices) but the system will no longer be galvanically isolated.
ICAD overview
All ICAD actuators are digital stepper motors. As the control signal changes ICAD will electronically count steps
up or down from its previous position. The actuator has an optical encoder which will actually measure the steps
to recalibrate while operating if needed. In all cases, the ICAD actuators will recalibrate every time that power is
cut and then reconnected. Recalibration is also accomplished when the valve is driven closed, the ICAD will take
an extra closing step to make sure it is completely closed and start counting from 0 again
The ICAD actuators can also be put into manual mode. Once the manual mode entered, the valve can be opened
and closed independent of the control signal. When in the manual mode, the display screen will ash the
opening degree and continue to ash until the parameter is restored to its normal operation setting
The ICAD actuator can be controlled with an analog input for modulating control, 1 digital input for open/close
solenoid function or with 2 digital inputs for oating 3-point control (open-neutral-close). The speed of the ICAD
can be altered
The ICAD display will continuously display the ICM valve opening degree in % unless there is an alarm or the
parameter list is being viewed.
The ICAD actuator can be connected to a 24 V d.c. UPS (uninterruptable power supply) and can be programmed
for a specic action in the event of a disruption to the normal power supply (see parameters, ID20 and ID27).
Please note that the UPS provides a discrete short term action in the event of a power failure. It cannot be used
for normal operation
The ICAD actuator also has an inverse function (see parameter ID13). This feature allows the valve to either open
or close on a rising analog signal
Operation the ICAD menu
To access the ICAD actuator menu, press enter button
© Danfoss | Climate Solutions | 2024.01 BC465027827472en-000102 | 15
ICM and ICMTS Motorized Valves with ICAD Actuators
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