
System Commissioning and Application Example NICE3000
new
User Manual
- 96 -
Figure 5-10 Wiring when CAN2 is used for parallel control
NICE3000
new
CN3
CN4
24
V
COM
CAN
+
CAN
-
MOD
+
MOD
-
CN2
24V
CAN+
CAN-
COM
CTB
MCTC-CTB
HCB
MCTC-HCB
24V
COM
MOD+
MOD-
1
2
3
4
Up button indicator
Up button
NICE3000
new
CN3
CN4
24
V
COM
CAN
+
CAN
-
MOD
+
MOD
-
CN2
24V
CAN+
CAN-
COM
CTB
MCTC-CTB
HCB
MCTC-HCB
24V
COM
MOD+
MOD-
1
2
3
4
Elevator
1#
Elevator
1#
Elevator
2#
Elevator
2#
1
2
3
4
Down button indicator
Down button
1
2
3
4
1
2
3
4
JP3
JP4
JP1
JP2
1
2
3
4
JP3
JP4
1
2
3
4
JP1
JP2
1
2
3
4
CAN2+
CAN2-
GND
CAN2+
CAN2-
GND
CAN2 cables for
parallel control
■
Parallel Control by Using RS232 (Terminal CN5)
When CANbus communication is applied for parallel control, if the 24 V power voltages of
two systems are different or the external interference is severe, the communication effect
is affected. To achieve better communication effect in parallel mode, we adopt RS485 at
terminal CN5 of the monitoring port on the MCB for communication of the parallel mode.
In this case, the RS232 communication signal needs to be converted to RS485
communication signal. Thus, two optical-isolated RS232/RS485 converters (model: U485A)
are required.
The following figure shows the wiring of parallel control implemented at the RS232
monitoring port.
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