ABB AC 31 - 5.7.6. Oscillators

Programming
Page 5-40 ABB Control - AC 31
1SBC 260400 R1001-b 06.99
5.7.6. Oscillators
There are four oscillator variables on the 40 and 50 series central units, which supply a fixed
frequency signal of a ½ cyclic ratio:
- M 255.00: frequency 2 Hz (period 500 ms.)
- M 255.01: frequency 1 Hz (period 1 s.)
- M 255.02: frequency 0.5 Hz (period 2 s.)
- M 255.03: frequency 16.67*10
-3
Hz (period 1 min.)
Each oscillator starts at a low level on startup.
The oscillators can be used , for example, to flash a lamp or to provide a rhythm.
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