Interface specifications – Westermo DDW-120 User Manual
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Interface specifications
Power
Rated voltage
12 to 48 VDC
Operating voltage
10 to 60 VDC
Rated current
240 mA @ 12 VDC
110 mA @ 24 VDC
60 mA @ 48 VDC
Rated frequency
DC
Inrush current, I
2
t
0.23 A
2
s
Startup current*
0.65 A
peak
Polarity
Reverse polarity protected
Redundant power input
Yes
Isolation to
All other
Connection
Detachable screw terminal
Connector size
0.2 – 2.5 mm
2
(AWG 24 – 12)
Shielded cable
Not required
* If external power supply is used it must meet specified start up current
Service port
Electrical specification
TTL-level
Data rate
115.2 kbit/s
Data format
8 data bits, none parity, 1 stop bits, no flow control
Circuit type
SELV
Transmission range
15 m
Isolation to
All other
Galvanic connection to
None
Connection
2.5 mm jack, use Westermo cable 1211-2027