Westermo RFIR-xxx - Manual (Page 18)

18 6641-22810
I/O connection
DO+
DI-
DI+
DO-
Product marking Direction Description
Digital in – Input Digital in –
Digital in + Input Digital in +
Status – Output Alarm relay (status) contact
Status + Output Alarm relay (status) contact
The Status output is a potential free, opto-isolated normally closed solid-state relay. This can be configured to
monitor various alarm events within the RFIR unit, see WeOS Management Guide. An external load in series
with an external voltage source is required for proper functionality. For voltage/current ratings, see Interface
specification section.
The Digital in is an opto-isolated
digital input which can be used
to monitor external events.
For voltage/current ratings, see
Interface Specification section:
External
Load
Status V
V Digital In
+
1
2
3
4
–
IO / Relay output
Connect resistance
30 W
Isolation to All other
Connection Detachable screw terminal
Connector size 0.2 – 2.5 mm 2 (AWG 24 – 12)
Maximum voltage/current 60 VDC / 80 mA
IO / Digital input
Voltage levels
Vih > 8V Vil < 5V
Iin = 2.9mA @60V
Isolation to All other
Connection Detachable screw terminal
Connector size 0.2 – 2.5 mm 2 (AWG 24 – 12)
Maximum voltage 60 VDC