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(4) Voltage interruption time of slave module
The voltage interruption operation of slave module is carried out for service interruption signal (PF
signal) of power supply module, watchdog timer of slave module, and check 5 V power regardless of
setting voltage interruption time (#246) of master module.
Start
PF signal OFF
Communicating
at remote I/O
No
I/O processing of I/O module
Yes
Output hold
switch
No
Yes
Watchdog timer
time-up
No
5V power 4.5V max.
Yes
Halt output "open"
All output module "OFF"
End
· When the check of 5 V power is gone below 4.5 V, all are forced to reset. The power supply characteristics
varies according to the consumption current of the power supply module as following diagrams.
120
Output hold time
5.1V,7A load
100
(ZW-1PU)
5.1V,5A load
(ZW-2PU)
80
60
40
20
0
85V/170V
100V/200V
20V
No
· The PF signal of the power supply module goes "OFF" below
85% of the rated voltage.
Yes
· The watchdog timer of the slave module goes time-up in "320
ms."
RST
· When output hold switch is "RST," the all halt output and output
module become "OFF" when communication with master station
have interruption of 320 ms.
No
120V/240V 132V/264V
AC input voltage
24V
28V
32V
DC input voltage
8
Output hold time
280
240
200
160
120
80
40
0
1
2
7
·
100 VAC 50H input
(ZW-1PU)
24 VDC input
(ZW-2PU)
3
4
5
6
7
Load current [A]
8
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