Programming The End Positions; On-Site End Position Programming; End Position Programming Via Devicenet - GEM 4242 Operating Instructions Manual

12 Programming the end positions

The end positions must be programmed under the following conditions:
– Retrofitting an electrical position indicator
– Replacing the actuator
– Replacing the diaphragm
If electrical position indicators have been fitted to the process valve at the factory, the end positions will already have been
programmed.
The end positions can be programmed as follows:
– On-site programming
– Communication interface
When programming via the communication interface, automatic programming is recommended.

12.1 On-site end position programming

1
1. Connect supply voltage.
2. Briefly (>100 ms) hold a magnet (e.g. 1242000ZMA) to the position marked PROG 1 on the housing cover.
ð OPEN and CLOSED LEDs flash alternately
ð High visibility LED flashes alternately green / orange
3. Open valve until end position is reached.
4. Close valve until end position is reached.
5. Programming mode is automatically terminated if the valve does not move for 5 seconds.
ð The end positions are set.

12.2 End position programming via DeviceNet

Automatic programming mode:
1. Briefly (>100 ms) set output bit 6 = 1. (automatic programming mode)
2. Set output bit 6 = 0.
3. Open valve until end position is reached.
4. Close valve until end position is reached.
5. Programming mode is automatically terminated if the valve does not move for 5 seconds.
ð The end positions are set.
Manual programming mode:
6. Set output bit 5 =1. (manual programming mode)
7. Open valve until end position is reached.
8. Close valve until end position is reached.
9. Set output bit 5 = 0. (electrical position indicator in normal operation)
ð The end positions are set.
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12 Programming the end positions
GEMÜ 4242
DeviceNet