Extension Module Ak-Xm 208C - Danfoss ADAP-KOOL AK-PC 783 Design Manual

Capacity controller with cascade control, refrigeration control systems
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Extension module AK-XM 208C

Function
The module contains:
8 analog inputs for sensors, pressure transmitters, voltage signals
and contact signals.
4 outputs for stepper motors.
Supply voltage
The supply voltage to the module comes from the previous mod-
ule in the row.
The supply voltage to the valves must be from a separate supply,
which must be galvanically separated from the supply for the
control range.
(Power requirements: 7.8 VA for controller + 1.3 VA per valve).
A UPS may be necessary if the valves need to open/close during a
power failure.
Light-emitting diodes
There is one row with LED's. It indicate the following:
• Voltage supply to the module
• Communication active with the bottom PC board (red = error)
• Status of outputs AO1 to AO4
24
Capacity controller RS8GN202 © Danfoss 11-2013
Separate voltage
supply is required
24 V d.c. 13 VA
max. 10 V
Output:
24 V d.c.
I
= 500 m A / coil
max.
20-500 step/s
AK-PC 783

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