10.3 Digital inputs DI
The digital inputs are non-isolated with the ground of the electronic weighing system supply
voltage 24 V.
Article number 7MH4138-6BA00-0CU0
Digital inputs
Number of inputs 3
Input voltage
● Rated value (DC)
24 V
● Permitted voltage at input, max.
30 V DC
● Current consumption @ 24 V DC
1.6 mA
● Voltage surge
35 V DC for 0.5 s
● Logical signal level 1 (min.)
11 V DC, input current typ. ≤.1.45 mA
● Logical signal level 0 (max.)
5 V DC, input current ≤ 0.2 mA
● Signal frequency
0 … 100 Hz
● Sampling rate (firmware)
1 ms
● Filtering can be parameterized (data record 7)
● Signal changes that are shorter than the programmed
time are not recorded.
0 ... 40 ms in intervals of 5 ms
● Electrical isolation
500 V AC
● Type in accordance with EN 61131-2:2017
Type 3
10.4 Digital outputs DQ
The set value is output at the digital output in case of a fault or SIMATIC CPU stop.
A freewheeling diode has to be installed at the consumer with inductive loads at the digital
output.
Article number 7MH4138-6BA00-0CU0
Digital outputs
Number of outputs 3 (high-side switch)
Short-circuit protection Yes
Supply voltage range
Supply voltage DQ via electronic weighing system supply
19.2 ... 28.8 V DC
Output switching capacity
● With resistance load, max.
0.5 A
Total current of the outputs
● Current per electronic weighing system, max.
1.5 A
With a total current ≥ 0.6 A, reduce the ambient temperature
by -1 °C per 100 mA.
Refresh rate of the firmware 1 ms
Technical data
10.4 Digital outputs DQ
Technology module TM SIWAREX WP351 HF
Operating Instructions, 01/2020, A5E47521010-AA 151