27
9.8.4.1
Definable I/O Par. 3-8
9.8.4.1.1 Definable inputs Par. 3-8-1
Inputs Par. 3-8-1-1/2/3 digital input on the WSD 1 to 3
hardware connections are only available when no
function is chosen in par. 3-3-4 WSD
Function None:
No function is chosen the normal WSD 1 to 3 function
is active see par. 3-3-4 WSD
Function Check run:
Extra parameter needed
Par. 3-7-3 Check run mode (Digital Input)
With this configuration, switching the digital input
(WSD 1 to 3) will activate a check run for the pumps.
Function Alternate set point:
Extra parameter needed
Par. 3-5-9 Adapt. Set point (value of the set point)
With this configuration, switching the digital input
(WSD 1 to 3) will activate an alternative set point.
Function Leakage:
With this configuration, switching the digital input
(WSD 1 to 3) will create an urgent or non-urgent
alarm for an external leakage alarm. A special relay is
needed for leakage detection.
Function Remote Acknowledge:
With this configuration of the digital input (WSD 1 to
3) you can reset an alarm on the Megacontrol (only
when the problem is solved).
Function By-pass valve:
With this function of the selected digital input (WSD 1
to 3) you can detect a signal of, for instance, a flow
switch; based on this signal a by-pass valve may be
opened. see also par. 3-14.
Function External power operation:
Extra parameter needed
Par. 3-4-2-5 Max power external operation
(100%,200% etc.)
With this configuration of the digital input (WSD 1 to
3) you can reduce the number of pumps that can run,
for instance in generator mode.
Input Par. 3-8-1-4
Function TH. FAIL P1
With this function you can activate or deactivate the
digital input for thermal failure of pump 1
Deactivation of this input is only recommended in
combination with the use of a VFD per pump.
If this function is activated you must connect a
thermal failure signal of pump 1 or make a wire bridge
between the com of the digital inputs and TH.FAIL P1
input.
Input Par. 3-8-1-5
Function TH. FAIL P2
With this function you can activate or deactivate the
digital input for thermal failure of pump 2
Deactivation of this input is only recommended in
combination with the use of a VFD per pump.
If this function is activated you must connect a
thermal failure signal of pump 2 or make a wire bridge
between the com of the digital inputs and TH.FAIL P2
input.
Input Par. 3-8-1-6
Function TH. FAIL P3
With this function you can activate or deactivate the
digital input for thermal failure of pump 3
Deactivation of this input is only recommended in
combination with the use of a VFD per pump.
If this function is activated you must connect a
thermal failure signal of pump 3 or make a wire bridge
between the com of the digital inputs and TH.FAIL P3
input.
Input Par. 3-8-1-7
Function TH. FAIL P4
With this function you can activate or deactivate the
digital input for thermal failure of pump 4
Deactivation of this input is only recommended in
combination with the use of a VFD per pump.
If this function is activated you must connect a
thermal failure signal of pump 4 or make a wire bridge
between the com of the digital inputs and TH.FAIL P4
input.
Input Par. 3-8-1-8
Function TH. FAIL P5
With this function you can activate or deactivate the
digital input for thermal failure of pump 5
Deactivation of this input is only recommended in
combination with the use of a VFD per pump.
If this function is activated you must connect a
thermal failure signal of pump 5 or make a wire bridge
between the com of the digital inputs and TH.FAIL P5
input.
Input Par. 3-8-1-9
Function TH. FAIL P6
3.
Fire alarm has higher priority over all other alarms and will turn the pump ON.
4.
This is a pulse contact
Summary of Contents for Megacontrol Series
Page 1: ...Control units Installation and operating instructions Series Megacontrol ...
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