42/78 SUREWAVE SFC USER MANUAL
1
Digital inputs
2
Digital outputs
3
Analogue inputs
4
Analogue outputs
5
External voltage sync
9.2.1 Digital inputs
A number of digital inputs are provided for customer interface. The inputs are active high, with
activation voltage being 24Vdc (supplied). These are summarized in Table 9-1: Summary of con-
trol inputs
Figure 9-4: User digital inputs
Terminal no.
Name
Description
P287-A-1
Hard stop
(EPO)
When system is running & this input goes low (opens),
emergency trip is activated.
P287-A-5
(Internal)
Inhibit start
(Door switch)
When system is not running, & this input is off, system is in-
hibited from starting. When system is running & this input
goes low (opens), an emergency trip is activated.
P287-B-2
Customer DI-A
Configurable to be used as a warning or a trip, e.g. a trans-
former thermal warning or trip.
P287-B-3
Customer DI-B
Configurable to be used as a warning or a trip, e.g. a trans-
former thermal warning or trip.
P287-C-1
Start
Starts the system if not current faults are present
