W.E.S.T. Elektronik POS-124-A-PDP, Техническая документация инструкция

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W . E . ST .
Elektronik GmbH
Page 23 of 45 POS-124-*-PDP-1121 13.02.2013
5.2.9 POL1 / POL2 (Output polarity)
Command Parameters Unit Group
POL1 X
POL2 X
x= +|- -
STD
This command enables the output signal polarity to be reversed.
5.2.10 EOUT1 / EOUT2 (Output signal in case of error)
Command Parameters Unit Group
EOUT1 X
EOUT2 X
x= -10000… 10000 0,01% EXP
Error output value. A value (degree of valve opening) for use in the event of a sensor error can be defined
here. This function can be used if, for example, the drive is to move to one of the two end positions (at the
specified speed) in case of a sensor error.
|EOUT| = 0 The output is switched off in the event of an error. This is normal behaviour.
CAUTION! If the output signal is 4… 20 mA, the output is switched off if |EOUT| = 0 . If a
null value = 12 mA is to be output in the event of an error, EOUT must be set to 1
4
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CAUTION! The output value defined here is stored permanently (independently of the pa-
rameter set). The effects should be analysed by the user for each application from the
point of view of safety
CAUTION! If EOUT is activated, the HAND mode should not be used. After deactivating
the HAND mode the output will be set to the programmed EOUT value.
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This is necessary if using valves without error detection for signals lower than 4 mA