|
21 |
AC |
|
|
|
- |
|
|
|
|
|
MA |
21 |
DC |
|
|
|
|
|
|
|||
- |
|
|
|
|
|
MA |
|
|
|
|
|
|
|
|
|
|
|
Galvanic |
Transient |
Balanced |
CE |
Westermo Teleindustri AB • 1998 • REV. A |
© |
||||
Isolation |
Protection |
Transmission |
Approved |
|
Strömslingeomvandlare
Current Loop Converter
Stromschleifenwandler
www.westermo.se
Specifications
Transmission |
Asynchronous, full/half duplex or simplex |
Interface 1 |
EIA RS-232-C/CCITT V.24 |
|
25-position D-sub female, DCE |
Interface 2 |
20 mA current loop, selectable active or passive |
Data rate |
Up to 19.2 bit/s |
Indicators |
Power, RD, TD |
Isolation |
Galvanic isolation with opto-coupler (data transmission) |
|
and transformer (supply) |
Isolation voltage |
1500V |
Overvoltage protection |
Mains: Breakdown voltage 440V at 230V AC |
|
and 220V at 115V AC |
|
Interface 2: Breakdown voltage transmitter |
|
and receiver 37V |
|
Surge capacity 0.6 kW for 1ms |
Power supply |
Switchable 115/230V +15/ –10% 48–62Hz |
Fuse |
100mA fast 5x20 mm |
Power consumption |
Max 5VA at 230V AC |
Temperature range |
5–50°C, ambient temperature |
Humidity |
0–95% RH, non-condensing |
Dimensions WxHxD |
161x53x139 mm |
Weight |
0.5 kg |
Mounting |
With rubber pads or screws. Screws: remove |
|
the two "keyholes" on the bottom of the case |
Switch settings
The MA-21 can through different switch settings be adapted to a vareity of running conditions. To set the switches, open the plastic case by placing and turning a screwdriver between top and bottom at the rear of the case.
DANGER! DO NOT OPEN CONNECTED UNIT
MAINS |
LINE |
V.24/RS-232-C |
|
CONNECTION |
CONNECTION |
1 2 3 4 5
8 |
6021-2002 |
|
|
S5 |
S3 |
S4 |
|
|
|
S2 |
S1 |
|
|
|
|
|
|
|
|
|
|
ON |
|
|
ON |
||
|
|
|
|
1 - 6 |
1 - 6 |
|
1 - 4 |
1 - 9 |
||||
|
|
|
|
|
OFF |
OFF |
||||||
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
S1 Selection of transmitted signal, selection of signal controlling CTS
S2 Selection of transmitter/receiver normal or inverted
S3 Selection of receiver active/passive
S4 Selection of transmitter active/passive
S5 Selection of power supply 115/230V AC
Transmitted signal
S1 |
ON |
TD |
|
|
6 7 8 9 |
S1 |
ON |
AUX |
|
S1 |
ON |
SRS |
|
S1 |
ON |
DTR |
|
|
1 2 3 4 5 6 7 8 9 |
Inverted Transmitter/Receiver
|
Transmitter |
Receiver |
|
ON |
|
S2 |
Normal |
Normal |
|
1 2 3 4 |
|
S2 |
ON |
|
Inverted |
Normal |
|
|
1 2 3 4 |
|
S2 |
ON |
|
Normal |
Inverted |
|
|
1 2 3 4 |
|
S2 |
ON |
|
Inverted |
Inverted |
|
|
1 2 3 4 |
|
CTS controlled by
S1 |
ON |
RTS |
|
S1 |
ON |
RD |
|
S1 |
ON |
Always high |
|
|
1 2 3 4 5 6 7 8 9 |
Receiver active/passive
|
ON |
S3 |
Passive |
|
1 2 3 4 5 6 |
S3 |
ON |
Active |
|
|
1 2 3 4 5 6 |
Transmitter active/passive
|
ON |
S4 |
Passive |
|
1 2 3 4 5 6 |
S4 |
ON |
Active |
|
|
1 2 3 4 5 6 |
|
Factory settings |
|
|
ON |
ON |
ON |
ON |
S1 |
S2 |
S3 |
S4 |
1 2 3 4 5 6 7 8 9 |
1 2 3 4 |
1 2 3 4 5 6 |
1 2 3 4 5 6 |
6021-2002 |
9 |
Loading...