F30 01 4 Start-up
HI 800 145 E Rev. 2.00 Page 29 of 52
Terminal Designation Function
37 LS+ Sensor supply of the inputs 17...20
38 17 Digital input 17
39 18 Digital input 18
40 19 Digital input 19
41 20 Digital input 20
42 L- Ground
Table 21: Terminal Assignment for the Digital Inputs
4.1.1.1 Surges on Digital Inputs
Due to the short cycle time of the HIMatrix systems, a surge pulse as described in
EN 61000-4-5 can be read in to the digital inputs as a short-term high level.
The following measures ensure proper operation in environments where surges may occur:
1. Install shielded input wires
2. Program noise blanking in the user program. A signal must be present for at least two cycles
before it is evaluated. The fault reaction is triggered with a corresponding delay.
i
The measures specified above are not necessary if the plant design precludes surges from
occurring within the system.
In particular, the design must include protective measures with respect to overvoltage,
lightning, earth grounding and plant wiring in accordance with the relevant standards and the
instructions specified in the system manual (HI 800 141 E or HI 800 191 E).
4.1.2 Connecting the Digital Outputs
Use the following terminals to connect the digital outputs:
Terminal Designation Function
1 L- Ground channel group
2 1 Digital output 1
3 2 Digital output 2
4 3 Digital output 3
5 4 Digital output 4 (for increased load)
6 L- Ground channel group
Terminal Designation Function
7 L- Ground channel group
8 5 Digital output 5
9 6 Digital output 6
10 7 Digital output 7
11 8 Digital output 8 (for increased load)
12 L- Ground channel group
Table 22: Terminal Assignment for the Digital Outputs
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