Using a configured or selected output curve, the controller converts the regulation output or operating data to the corresponding
current (-25 to 25 mA) or voltage (-10 to 10 V).
More information
See
Hardware characteristics and configuration
,
General characteristics
,
Analogue output characteristics and
configuration
.
Using an analogue output with a switchboard instrument
The analogue output can be connected directly to a 4 to 20 mA switchboard instrument.
13.11.8 Pulse width modulation (PWM) output characteristics
The pulse width modulation (PWM) output is a regulation output for low power circuits. It may be used to regulate an electronic
engine, but not an actuator.
The PWM output (0 to 100 %) is configured as a curve, in the same way as the other analogue outputs.
More information
See
Hardware characteristics and configuration
,
General characteristics
,
Analogue output characteristics and
configuration
.
Duty cycles
The PWM uses duty cycles for its output. The PWM frequency determines the cycle length. One cycle is therefore 1/500 Hz = 0.002
seconds long, ±10 %. The following table illustrates the output for various duty cycles.
DESIGNER'S HANDBOOK 4189340911K UK
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