SBC PCD1 Series - Page 75

Saia-Burgess Controls AG
Manual Manual PCD 1 / PCD 2 Series │ Document 26 / 737 EN22 │ 2013-11-26
CPUs and expansion housings
3-58
Monitoring the CPU (watchdog)
3
Watchdog - connection diagram
WD 1)
Supply
WD
Start
Bypass
switch for
commissioning
Process
Main switch
+24V
0V
0
1
WD
25
26
24
23
22
21
20
1) Switching capacity of the watchdog contact: 1 A, 48 VAC/DC