ABB XSeries G4 6200, Руководство пользователя, Страница: 27 / 168

2104349 rev. AD Page 1
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Figure 1
–7 G4 EX termination board
1.2.3.1
On-board I/O
The G4 EX termination board provides similar base I/O as earlier XSeries models
but with a reduced number due to enclosure restrictions. This includes:
- 1 user AI
- 1 user DO
- 1 user DI
- Interface for I/O daughter card: 3 AI, 1 AO, 4 DI (NAMUR rated) and 4 DO
1.2.3.2
Digital input
The G4 EX provides one digital/pulse input as a means to monitor external
equipment.
When connecting or disconnecting any wires to the G4 EX
boards, the user should remove all power sources and
insure that they are grounded properly.
The digital input reads an external contact. This is primarily used as a status input
to read external equipment. The contact must be closed to be considered “ON”.
The “ON” condition is recorded in the log period alarms and can trigger the action
of the G4 EX’s digital voltage output. OFF is defined as an open contact.
Selectable de-bounce can be enabled or disabled within PCCU32. See the
PCCU32 Help Files for additional information.
DI electrical specifications
- Open circuit voltage: 5 VDC (Internally pulled up to 5 VDC Nom.).
- Short circuit leakage current: -395 uA typical.