Strain Guage Indicator: 409-W
REF NO: m59A/om/501
Issue NO: 03
Page 31 of 34
10.4 Power Supply
Power Supply
85 to 265VAC @50HZ / 100-300VDC, 18 to 36VDC(One at a
time factory settable)
Power Consumption
Max. 10VA
Load excitation voltage
5 V,10 V,12V,15V DC(±1%) @100mA(±1 % accuracy)
10.5 Isolation
Between primary terminals* and secondary
terminals**
At least 1500 V AC for 1 minute
Between primary terminals* and grounding terminal
At least 1500 V AC for 1 minute
Between grounding terminal and secondary
terminals**
At least 1500 V AC for 1 minute
Between secondary terminals**
At least 500 V AC for 1 minute
Insulation resistance Between Power supply
terminal and ground terminal
500V DC 50 MΩ
* Primary terminals indicate power terminals and relay output terminals.
** Secondary terminals indicate analog I/O signal and Communication O/P.
10.6 Communication Specifications
Communication Interface
Based on EIA RS-485
Communication method
Half-duplex communication start stop synchronous
Communication Speed
4800/9600/19200/38400bps selectable by key
Parity
None,Odd,Even(Selectable)
Stop bit
1, 2(Selectable)
Communication Protocol
Modbus RTU
Connectable number of unit
Max.32 unit per host computer
Communication error detection
CRC check
