F 3237 (0622)
All rights reserved. Equipment subject to change without notice: 195
HIMA Paul Hildebrandt GmbH + Co KG, P.O. Box 1261, 68777 Brühl
F 3237
F 3237: 8-channel input module
safety-related, applicable up to SIL 3 according to IEC 61508,
• for the connection of safety-related proximity switches,
proximity switches according to EN 60947-5-6 (NAMUR) and
resistor-wired sensors
• monitoring of the lines for short-circuit and line break
Figure 1: Block diagram and front cable plug
Appertaining function block: HB-RTE-3
The module is automatically tested completely during operation. The main test routines are:
- Switch on and switch-off capability
- Crosstalk of the input circuits by walking-zero
- Function of the input filters
- Correct function of the module
The function of LEDs are not tested.
Switching time approx. 10 ms
Operating points I
E
0-signal 0.35 ≤ I
E
≤ 1.2 mA
1-signal 2.1
≤ I
E
≤ 6.0 mA
wire break
≤ 0.28 mA
short circuit
≥ 6.5 mA
Line impedance
≤ 50 Ω (acc. to EN 60947-5-6)
Line length
≤ 1000 m (∅ = 0.5 mm
2
)
Supply voltage U
S
8.2 V
Shunt R* 681
Ω; 1 %; 0.25 W
(R17...R24) part no. 00 0751681
Space requirement 4 SU
Operating data 5 VDC / 90 mA; 24 VDC / 170 mA
Front
cable plug
Z7
...
7
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