Siemens SIWAREX FTA - Page 196

Technical Data
SIWAREX FTA
14-184
Permitted load cell resistance without Ex-i-Interface
Input resistance > 56 Ω
Output resistance < 4010 Ω
Permitted load cell resistance with Ex-i-Interface
Input resistance > 87 Ω
Output resistance < 4010 Ω
Monitor for sensing inputs
Typical = 5 V
Hysteresis 120 mV
Response time for sense line monitor
= 1 sec
Common mode rejection CMRR @50 Hz
Typical 120 dB
Measuring value filtering for low pass filter
0.05...20 Hz
Measuring value filtering for average value filter
2...250 values
Impedance measurement for load cells
Measuring range 56 Ω...4010 Ω
Precision ±5%
Repeat accuracy <1 %
Potential separation
500 V
* Values apply to assembly output
Table 14-3 Data: Load cell connection
14.4 Analog output
The defined replacement value is output for active BASP-/OD signal
(S7 CPU).
Range 1
0 to 20 mA
Range 2
4 to 20 mA
Max. total error at 25 °C
< 0,5 % *
Refresh rate
10 msec
Load (incl. line resistance)
= 250 Ω, = 30 nF
Line length 0.5 mm
2
200 m
Temperature coefficient
max. ± 75 ppm / K
Resolution
12 Bit (4096 parts) **
Potential separation
500 V
* Definitions apply with current >0.5mA
** Resolution reduced by 20 % with operations 4 to 20 mA
Table 14-4 Data: Analog output
14.5 Digital inputs (DI), Digital outputs (DO)
The defined value is always output on the DO for active BASP-/OD
signal (S7 CPU).
An inverse diode (recovery diode) is to be used on the consuming
component with inductive loads on the DO.
DI
DO
Number
7
8
Rated voltage
DC 24 V
Potential separation
500 V
Voltage range for H signal
DC 15 V to
30 V
Voltage range for L signal
DC -3 V to
5 V
Input current (15 to 30 V)
2 to 15 mA
Switching frequency
max. 50 Hz
max. 50 Hz
Rated current
0.5 A