KGL Operating Manual – VS 3010 BS
2018-07-02
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compressor (x+1) (x = number of Z1 compressor stages).
In the case of speed controlled condenser fans, the enable for the FC / speed controller is issued via the
HP:
digital output for fan 1 (terminals 15/18).
In normal operation, this enable is withdrawn in the case of too low suction gas / condenser pressure.
The picture shows a system
power supply bridging.
without
Example:
Number of Z1 compressors = 2
Number of Z2 compressors = 2
Enable FC-Z2 via stage (number of Z1 compr1) = 3
The FC / speed controller must be configured here so that the enable is issued in the case of closed
contact, i.e. application of a voltage.
2. Speed controller / external alarm fault input
A. Speed-controlled compressor or condenser control:
The error message output of the FC / speed controller is monitored via digital input 15 (terminals 78/79) of the
pack controller during fan speed control. If a fault report is detected via the speed controller / external alarm
input when speed control is configured, the message "HP Speed contr" is sent. The external alarm function is
not active in this case.
