Specifications md-44, Switch settings md-44, Danger! do not open connected unit – Westermo MD-44 User Manual
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MD-44 DC
LINE CONNECTION
–
+
TD RD RTS CTS DCD DTR DSR SG
POWER
R+ R-
V24/RS-232-C
RS-422/RS-485/V11
CONVERTER
T+
T-
PWR
V24/RS-232-C
CONNECTION
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4
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8
9
;;
yy
S3:1-4
S2:1-9
8
6155-2002
Specifications MD-44
Transmission
Asynchronous, full/half duplex or simplex
Interface 1
EIA RS-232-C/CCITT V.24/V.28
9-position D-sub female, DCE
Interface 2
EIA RS-422/RS-485/CCITT V.11
Data rate
300 bit/s – 38.4 kbit/s
Indicators
Power, RD, DCD, CTS, RTS, TD
Insulation
Galvanic insulation with opto-coupler (data transmission)
and transformer (supply)
Insulation voltage
1500V
Overvoltage protection
Mains: Breakdown voltage 430V at 230V AC
Interface 2: Breakdown voltage
transmitter and receiver 7V
Surge capacity 0.6 kW for 1ms
Power supply
230V +15/–10% 48–62Hz
Fuse
100 mA fast 5x20 mm
Power consumption
Max 22 mA at 230V
Temperature range
5–50°C, ambient temperature
Humidity
0–95% RH, non-condensing
Dimensions
55x100x128 mm (WxHxD)
Weight
0.5 kg AC / 0.25 kg DC
Mounting
On DIN-rail 35 mm
Switch settings MD-44
The MD-44 can through different switch settings be adapted to a variety of running
conditions. To set the switches, open the plastic case with e.g. a screw-driver.
Danger! Do not open connected unit