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Digital Outputs (DC) - Solid State
GDODC60, GDODC200, GDODC60L,
GDODC60MO,
I/O Device
+
9'&
–
LOAD
Digital Outputs (AC)
GDOAC120, GDOAC240, GDOAC120MO,
GDOAC240MO
I/O Device
9$&
LOAD
N
Relay Application Precautions
In applications where the digital output devices are used to perform critical
equipment control operations (for example, breaker trip, etc.):
1. Make connections to the external equipment via an intermediate
mechanism which allows relay control to be completely disabled for
commissioning and servicing (for example, firmware upgrades).
2. Anytime the 9700 Power Meter has powered down and powered back
up, test the digital outputs of the 9700 Power Meter to ensure that all
your control condition(s) are occurring as expected.
3. When you have verified all control operations, relay control of the
external equipment can be used.
4. Do not use digital output modules on I/O Expansion Board 'B' for control
applications, as false triggers may result when the supply power to I/O
Board 'B' is interrupted. Digital output modules can be used on I/O
Board 'B', provided that field equipment is protected in the event of false
triggers described above. Contact Siemens Energy & Automation
Customer Service at 800-427-2256 for assistance if you want to use
digital output modules on I/O Board 'B' for control purposes.
Digital Outputs (DC) - Mechanical
GDODC100M
1
2
N / –
1
2
I/O Device
1
2
LOAD
!$
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