12BTECHNICAL DATA
Max. distance between LC and Ex interface in
Ex area
150/500 m for gas group IIC
500 m* for gas group IIB
(see device manual SIWAREX IS)
Load cell powering:
Voltage regulated
Maximum current
6 V DC
150 mA
Permissible load cell resistance without Ex-i-
interface (per channel)
Input resistance > 40
Ω
Output resistance < 4010
Ω
Permissible load cell resistance with Ex-i-interface
(per channel)
Input resistance > 87
Ω
Output resistance < 4010
Ω
Monitoring of the sensor inputs (typical)
≥
5.3 V
Hysteresis 0.1 V
Max. permissible input voltage at the signal and
sensor inputs
15 V
Response time sense line monitor
≤
1 s
Common mode suppression CMRR @50 Hz
> 80 dB
Low-pass filter cutoff frequency
0.05...5 Hz
Measured value filtering for mean value filter
30 values (20 ms)
Potential isolation
500 V (DC)
*Possible up to 1000 m under certain conditions, when using the recommended cable
(accessories)
Table 13-3
Data: Load cell activation
13.4 RS 232C port
Baud rate
9600 baud
Data bits
8
Parity even
Stop bits
1
Max. distance
15 m
Signal level
in accordance with EIA-RS232C
Potential isolation
500 V (DC)
Table 13-4
Data: RS 232C port
13.5 TTY port
Operating
mode
Passive and unidirectional, i.e.
transmitter only (TxD)
Baud rate
9600 baud
Data bits
8
Parity even
Stop bits
1
Max. line length (@ 20 mA)
125 m
Potential isolation
500 V (DC)
Transmitter voltage drop
< 2 V
Max. loop current
25 mA
Table 13-5
Data: TTY port
SIWAREX U
13-73
Summary of Contents for Siwarex U
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