User’s Manual
CD3000M-1PH from 125A to 700A
Honeywell
27
www.honeywell.com/imc
6.2.5 Digital input Command HB calibration
RESET 7
RESET 7
RESET 8
RESET 8
INPUT + 9
INPUT + 9
INPUT - 10
INPUT - 10
0V GND 11
0V GND 11
+ 8V 12
+ 8V 12
SLAVE + 13
SLAVE + 13
SLAVE - 14
SLAVE - 14
+ CAL 15
+ CAL 15
- CAL 16
- CAL 16
17
17
N.C. 18
N.C. 18
L2
L2
440/220V 3
440/220V 3
PE 4
PE 4
FAN 5
FAN 5
FAN 6
FAN 6
440/220V 1
440/220V 1
2
2
COM 19
COM 19
N.O. 20
N.O. 20
HB RELAY OUTPUT
HB RELAY OUTPUT
T2
T2
EXTERNAL HB
CALIBRATION 24 V dc
Reset Push Button
(normally closed)
Reset Push Button
(normally closed)
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.