Mitsubishi Electric WS0-CPU0 Operating Manual page 167

Table 70:
Parameters of the Valve
monitoring function block
ATTENTION
Logic programming – Function blocks
Parameters of the function block
Parameter
Reset condition
Continuous monitoring
when valve is active
Valve mode
Max. switch-on feedback
delay time
Max. switch-off feedback
delay time
Min. reset pulse time
Use fault present
Connect the feedback signals correctly!
The signals for Feedback 1 and Feedback 2 have to be protected against short-
circuits to the signals for outputs (e.g. Output 1a, 1b, 2a and 2b) as well as against
each other (e.g. by means of protected wiring or wiring of these signals solely within
the control cabinet).
Output 1a to Output 2b
Both outputs of a pair (Output 1a and Output 1b or Output 2a and Output 2b) have
always the same value. This way, two outputs per valve are available to connect two
output elements directly.
Output 1a/1b or Output 2a/2b become High, if the related Feedback 1 or Feedback
2 input is High and the related Control input changes from Low to High subsequently.
Output 1a/1b or Output 2a/2b become Low, if the related Control input is Low or if a
fault is present (Feedback error output is High or Directional error output is High).
The related control input for Output 1a/1b is always Control 1.
The related control input for Output 2a/2b depends on the configured valve type:
 For Double valve: Control 1
 For Directional valve: Control 2
Possible values
 Manual reset
 Auto reset
 No
 Yes
 Single (Control 1, Output 1a, Output 1b, Feedback 1
activated)
 Double (Control 1, Output 1a, Output 1b, Feedback 1, Output
2a, Output 2b, Feedback 2 activated)
 Directional (Control 1, Output 1a, Output 1b, Feedback 1,
Control 2, Output 2a, Output 2b, Feedback 2, Directional
error activated)
50 ms to 10 s in steps of 10 ms (0 = disabled, only with CPU
firmware V2.00.0 or higher).
If this parameter is disabled, then the option Continuous
monitoring when valve is active has to be deactivated as well.
If this parameter is enabled, the value has to be greater than the
logic execution time.
50 ms to 10 s in steps of 10 ms (0 = disabled, only with CPU
firmware V2.00.0 or higher).
If enabled, the value has to be greater than the logic execution
time.
 100 ms
 350 ms
 With
 Without
Chapter 9
164