Interface specifications – Westermo LRW-102 User Manual
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Interface specifications
Power
Rated voltage
12 to 48 VDC
24 VAC
Operating voltage
10 to 60 VDC
20 to 30 VAC
Rated current
400 mA @ 12 VDC
200 mA @ 24 VDC
100 mA @ 48 VDC
Rated frequency
DC
AC: 48 to 62 Hz
Inrush current I
2
t 0.2
A
2
s
Startup current*
1.0 A
peak
Polarity
Reverse polarity protected
Redundant power input
Yes
Isolation to
TP/FT-10 port and status port
Galvanic connection to
–
Connection
4-position detachable screw terminal
Connector size
0.2 – 2.5 mm
2
(AWG 24 – 12)
Shielded cable
Not required
* External supply current capability for proper start up.
Status
Port type
Solid state relay
Operating voltage
Up to 60 VDC
Load current
Up to 100 mA
Contact resistance
8 Ω
Isolation to
TP/FT-10 port and power port
Connection
2-position detachable screw terminal
Connector size
0.2 – 2.5 mm
2
(AWG 24 – 12)
TP/FT-10
Electrical specification
L
ON
W
ORKS®
TP/FT-10 using FTT-10A transceiver
Data rate
78.5 kbit/s
Data format
Synchronous
Protocol
LonTalk
®
Transmission range
Up to 2700 m
Termination
Single or double external termination according to TP/FT-10
specification
Isolation to
Power port and status port
Connection
2-positon detachable screw terminal
Connector size
0.2 – 2.5 mm
2
(AWG 24 – 12)
Shielded cable
Not required
Conductive housing
No