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Proportional outputs
Instruction book, IQAN
Proportional outputs
The current /PWM outputs control proportional valves and devices. For the current
range and loads, see Appendix A.
Frequency
To obtain the best performance from proportional valves the controller produces a
current mode (closed loop) output signal or a PWM mode (open loop) output signal.
The type of output is selectable in IQAN software. The module has an adjustable
frequency which can be changed using IQAN software. For the possible frequencies,
see Appendix A.
Connecting loads to proportional COUT outputs
Connecting a load, e.g. one proportional valve section, to the current mode outputs is
done by using the COUT/CRET paired positions.
EXAMPLE
Positive direction:
Connect the proportional valve to the COUT-X, and the CRET-X+, respectively.
Negative direction:
Connect the proportional valve to the COUT-X, and the CRET-X-, respectively.
Connecting a load to a proportional output.
NOTICE
DO NOT install diodes across coils for COUT mode! (In COUT mode an internal
clamping diode is used).
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