Interface specifications – Westermo MRD-350 User Manual
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6623-2221
Interface specifications
Power
Rated voltage
12 – 48 VDC
Operating voltage
10 – 60 VDC
Rated current (max)
370 mA @ 12 VDC
Start-up current (max)
1000 mA @ 12 VDC
Rated frequency
DC
Consumption guidance*
Voltage
Mode
Consumption
12 VDC
GPRS
Idle
165 mA
24 VDC
GPRS
Idle
90 mA
48 VDC
GPRS
Idle
55 mA
12 VDC
GPRS
Send
240 mA
24 VDC
GPRS
Send
130 mA
48 VDC
GPRS
Send
75 mA
12 VDC
3G
Idle
225 mA
24 VDC
3G
Idle
120 mA
48 VDC
3G
Idle
70 mA
12 VDC
3G
Send
275 mA
24 VDC
3G
Send
155 mA
48 VDC
3G
Send
80 mA
12 VDC
3G
Send&Receive
330 mA
* For example purpose only. Hard to predict exact values since there are a lot of factors that affect the power
consumption, such as signal strength. Example measurement was carried out in-doors in a 25ºC room with
"normal" signal strength.
RS-232
Electrical specification
EIA RS-232
Data rate
300 bit/s – 115.2 kbit/s
Data format
7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits
Protocol
Transparent, optimised by packing algorithm
Circuit type
SELV
Transmission range
15 m / 49 ft
Connection
9 pin D-sub female
Shielded cable
Not required
Conductive housing
Yes
Number of ports
1