Parker PWD Series, Руководство по эксплуатации

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Electronic for proportional DC valves
Series PWDXXA-40X
Operation Manual
PWDXXA-40X_20 5715-677 UK.indd 26.01.17
Parker Hannifin Corporation
Hydraulics Group
Parker Hannifin Corporation
Hydraulics Group
If a comparator window for the feedback signal
monitoring is defined via parameter P21, the output
generates a voltage signal of 0V if the upper or
lower threshold is detected. Within the window the
output value is typ. 10 V.
The monitor output is not calibrated and
represents simply a trend indicator.
The output may drive a load of max. 5 mA.
Exceeding this limit leads to malfunction.
Wiring diagram of monitor output
Wiring diagram of status output
Monitor output (optional comparator output)
A voltage information representing the feedback
signal (i.e. the valve stroke) is available from the
terminals 7 and 13. Herewith a voltage span of +10
V...0...-10 V means +100...0...-100 % feedback
signal range. The signal resolution of this output
averages 8 bit = 0,4 %. In case of a breakdown
within the sensor cable the monitor output will be
switched off, provided that the feedback signal
cable break detection is in use (parameter E12).
Status output
The terminals 4 and 13 distributes a signal infor-
mation about the status of the electronics. The
following information is available:
• feedback signal cable break (not for options
voltage ±10 V / ±20 mA)
• command signal cable break (only for option
4...20 mA)
• internal processor fault
• enable off
The output may drive a load of max. 15 mA.
Exceeding this limit leads to malfunction.