5 System monitoring
24 Positioner DC 6-06
The terminal connection diagrams
7.3.1 Analogue setpoint, stop signal digital and/or analogue, actuator with disc
rotor motor
7.3.2 Analogue setpoint, stop signal digital and/or analogue, gearless actuator
7.3.3 PWM setpoint, stop signal digital, actuator with disc rotor motor
7.3.4 PWM setpoint, stop signal digital, gearless actuator
operate with a digital stop signal.
5.2.1.2 External stop request by an analogue input
To be able to meet demands for the stop input to be monitored, the stop request can
be also be selected by a monitored analogue input instead of by a digital input.
Parameter 4340 AnaStopRequestUsed must be set to 1.
ADC 1 on 2 is the used automatically as an analogue input. The input can be used as
a current or voltage input.
5510 AnaStopCurrOrVolt = 1 Voltage input 0..5 V
5510 AnaStopCurrOrVolt = 2 Current input 0..22 mA
It should be remembered that only a part of the range can be used for the signal, e.g.
4..20 mA, so as to be able to define error limits. Parameterization of the analogue
input is described in detail in
6.2 Setpoint selection and stop request via analogue
inputs.
The measured value of the analogue stop request is displayed in the range 0..100 %
in 2900 AnaStopSensor. The two thresholds 340 AnaStopThresholdLow and 341
AnaStopThresholdHigh are used to generate the actual stop signal 2809
AnaStopRequest:
2900 AnaStopSensor <= 340 AnaStopThresholdLow 2809 AnaStopRequest = 0
2900 AnaStopSensor >= 341 AnaStopThresholdHigh 2809 AnaStopRequest = 1.
If the analogue stop request is used, a PWM selection of the setpoint (if any)
must be connected to PWM input 3 (Pins 11 and 12). If the analogue stop
request is not used on the other hand, the PWM setpoint is automatically
expected at PWM input 1 (Pins 2 and 3). This does not affect the analogue
setpoint selection.
Note
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