Frequently Asked Questions - Danfoss ICM 20 Installation, Programming, And Troubleshooting Manual

Quick Start Guide | ICM/ICAD Motorized Valves - Installation, Programming, and Troubleshooting

Frequently Asked Questions

© Danfoss | DCS (MWA) | 2016.07
What happens in the event of a power failure?
The ICAD actuator will remain in the position it is in when power is lost. There are two approaches to
solving the issue:
• Add a UPS (Uninterruptible Power Supply) device to the power wiring. This is easily accomplished
with the brown (-) and black (+) wires in the power cable bundle. A UPS device is available from
Danfoss and can provide up to 10 amps of power for up to 90 seconds in order to move the valve to
the desired position. Because of the high amperage, the UPS is capable of providing power to several
ICAD actuators depending on the size of the actuator. NOTE: The UPS is not a continuous power
supply. It is only meant to change the valve position once in the event of a power failure.
• Add a solenoid valve in front of the ICM in order to stop refrigerant flow. This is a simple solution
provided that there is no issue associated with the additional pressure drop through the solenoid
valve.
How much power do I need to supply to the ICAD?
The total power required depends on the ICAD size and the number of ICAD's powered by the dc power
supply. The power for each ICAD is:
• ICAD 600 (ICM 20, 25, and 32), the requirement per valve is approximately 30 watts.
• ICAD 900 (ICM 40, 50, and 65), the requirement per valve is approximately 50 watts.
• ICAD 1200 (ICM 100, 125, and 150) the requirement per valve is approximately 75 watts.
• ICAD 600A (ICM 20, 25, and 32), the requirement per valve is approximately 30 watts.
• ICAD 1200A (ICM 40, 50, 65, 100, 125, and 150) the requirement per valve is approximately 50 watts.
How can I monitor the valve position remotely?
The control wiring bundle provides for a 4 to 20 mA or 0 to 20 mA signal output with the blue (+) and
orange (-) wires. The signal can be sent to:
• A remote display
• A PLC or PC
• Another ICAD actuator to provide the same input signal (daisy chain)
At what minimum OD%/mA will the ICAD automatically close and calibrate?
The ICAD will automatically close or be closed when the opening degree is below 3% which corresponds
to 4.48 mA. After it is closed it will give a few extra steps to calibrate the valve.
If the 4-20mA signal is lost while the valve is open, will the ICAD close the valve?
Yes, if the input signal is lost while the valve is open, the ICAD will close the valve and flash an A3 alarm
which is for an input error.
How many turns/revolutions with the manual tool will fully open/close ICM valve?
• ICM 20: 1.25 turns
• ICM 25: 2.5 turns
• ICM 32: 3 turns
• ICM 40: 4 turns
• ICM 50: 5 turns
• ICM 65: 5 turns
• ICM 100: 12.75 turns
• ICM 125: 15.25 turns
• ICM 150: 18.25 turns
Does the ICAD make a high frequency noise?
Yes, when the ICAD is at standstill, it will generate a high frequency noise which is normal.
What size wire gauge is recommended to run to the ICADs?
The typical wire gauge is 22 AWG. For power wiring, the recommended maximum lengths (for 22 AWG)
are:
• ICAD 600 90 feet
• ICAD 900 50 feet
• ICAD 1200 30 feet
• ICAD 600A 90 feet
• ICAD 1200A 50 feet
Heavier wire gauge will allow for longer lengths of power wiring. For example with 17 AWG, maximum
lengths are:
• ICAD 600 285 feet
• ICAD 900 170 feet
• ICAD 1200 115 feet
• ICAD 600A 285 feet
• ICAD 1200A 170 feet
Control wire lengths can be as long as 1500 feet.
When running wire to the ICADs, does the wire need to be shielded?
There is no need for shielded cable; however, if used, the EMC capabilities of the ICAD will be improved.
DKRCI.EI.HT0.B3.22 | 520H4763 | 16