3. Pump Setup
ORM0043_2
Modulating Controller Application Manual
Page 7
If
Fail On Pump Flt
is active then the actuator will
position based on the fault override settings.
3.4 Pump Fault
The
Pump Fault
input is used to indicate that there is a
fault with the pump motor and should be linked to the
digital input provided by the pump indicating whether
the pump is healthy or not.
If
Pump Fault
is active then the
Pump Fault
output is set
active and
Pump Output
is turned off as the pump is in
fault. If
Fail On Pump Flt
is active then the actuator will
position based on the fault override settings.
3.5 Pump Overrun Fault
A
Pump Run Max
time can be set to specify the
maximum length of time that the pump can continuously
run for. This is included to prevent the pump being used
beyond its certified limits and prevent the possibility of it
running indefinitely.
Once the
Pump Output
has been continuously active for
greater than the
Pump Run Max
time,
Overrun Fault
is
latched active. Once
Overrun Fault
is active it turns
Pump Output
off which prevents the pump being run
and because the
Overrun Fault
is latched the pump
cannot be run until the fault is reset.
If
Fail On Pump Flt
is active then the actuator will
position based on the fault override settings.
To reset
Overrun Fault
,
Clear Fault
must be set active.
This immediately resets the fault and then
Clear Fault
is
automatically set
to off (such that it doesn’t
automatically clear
Overrun Fault
if it were to occur
again).
Alternatively the switch can be held away for more than
three seconds in Automatic mode which will also reset
Overrun Fault
.
3.6 Low Oil Level
A level switch can be linked to
Low Oil Level
input to
indicate when the pump oil reservoir has reached a low
level limit.
If
Low Oil Level
is active for greater than
Lx Limit Delay
time, then
Low Level Fault
output is set active.
If
Lo Lvl Pump Lock
is also active then
Pump Output
is
turned off which prevents the pump running if there is
insufficient oil in the reservoir. If
Fail On Pump Flt
is also
active then the actuator will position based on the fault
override settings.
3.7 High Oil Temperature
A temperature switch can be linked to
High Oil Temp
input to indicate that the oil temperature has reach a
high temperature limit.
If
High Oil Temp
is active for greater than
Tx Limit Delay
time, then
High Temp Fault
output is set active.
If
Hi Tmp Pump Lock
is also active then
Pump Output
is
turned off which prevents the pump running if there is
an unusually high oil temperature. If
Fail On Pump Flt
is
active then the actuator will position based on the fault
override settings.
