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User's Manual
6.2.5 Digital input Command HB calibration
EXTERNAL HB
CALIBRATION 24 V dc
L2
T2
6.2.6 RS485 Command HB calibration
RS485 BUS
If load current decreases for partial or total load failure (sensitivity 20% standard Adjustable via
RS485) the yellow LED becomes ON and alarm relay changes status.
If CD3000M is still in conduction with no input signal (LED green OFF) it means that there is a short
circuit on thyristors and red LED (SC) becomes ON.
The diagnostic is active only when the switching period is longer than 60ms (3 main
voltage cycle).
If the load has been changed calibration procedure must be done again.
CD3000M-1PH from 125A to 700A
440/220V 1
2
Reset Push Button
440/220V 3
(normally closed)
PE 4
FAN 5
FAN 6
RESET 7
RESET 8
INPUT + 9
INPUT - 10
0V GND 11
+ 8V 12
SLAVE + 13
SLAVE - 14
+ CAL 15
- CAL 16
17
N.C. 18
COM 19
HB RELAY OUTPUT
N.O. 20
L2
T2
27
Honeywell
440/220V 1
2
Reset Push Button
440/220V 3
PE 4
(normally closed)
FAN 5
FAN 6
RESET 7
RESET 8
INPUT + 9
INPUT - 10
0V GND 11
+ 8V 12
SLAVE + 13
SLAVE - 14
+ CAL 15
- CAL 16
17
N.C. 18
COM 19
HB RELAY OUTPUT
N.O. 20
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