West Control Solutions KS 45 - Manual (Page 28)

Display range
Limit value 1
Outputs
Normally open: ( ConF / Out.x / O.Act = 0 ) (as shown in the example)
Normally closed: ( ConF / Out.x / O.Act = 1 ) (inverted output relay action)
6.7.2 Heating-current alarm
For the measured heating current; different alarms can be activated.
• Overlaod heating current: Heating current is larger than limit value HC.A.
•
Interrupt heating current: Heating current is smaller than limit value HC.A.
• For both, short-circuit alarm is integrated.
Short circuit monitoring
Current flow in the heating circuit although the controller output is switched off is considered as a short circuit e.g. in
the solid-state relay and error message SSr (as an alarm in the error list, if configured) is output.
g
If the heating current is not measured as an AC current input S.tYP = “31 current 0...50mA AC”, the filter
time constant must be t.Fx = 0, to prevent generation of an SSR alarm due to the filter effect.
g
With heating current measurement via INP1, note additionally that the cycle time of connected actuators
should be > 10 s due to internal hardware filters.
g
With SSR short circuit alarm output, the output will be within the limits again only after alarm
acknowledgement.
Heating current overload
If the current flow in the heating current circuit is higher than the adjusted heating current limit value ( HC.A), error
message HC.A (as an alarm in the error list, if configured) is output.
Heating current interruption
If the current flow in the heating current circuit is lower than the adjusted heating current limit value ( HC.A), error
message HC.A (as an alarm in the error list, if configured) is output.
g
With heating current alarm output, the output is within the limits again immediately, when the heating
current returns within the limits.
Functions
Limit value processing 28 KS 45
L.1
LED LED
HYS.1 HYS.1
H.1
-1999 9999
SP
L.1
LED LED
HYS.1 HYS.1
H.1
-1999 9999
rot / red rot / red
L.1 H.1