Insulation Resistance Tester - MultiTrode MultiSmart Installation & Operation Manual

17.2 Insulation Resistance Tester

The energy monitoring and motor protection board has a built in insulation tester. It can be configured to
conduct tests at regular intervals. A wiring diagram can be found in Section 7.6.1.
Navigate to:
There are two options listed,
Insulation Resistance Warning
•
Insulation Resistance (Test)
•
Both can be set to fault the pump, however as the name suggests, the Insulation Resistance Warning fault is
configured to generate a fault and not to fault the pump. In order to configure the threshold, scroll down and
select the appropriate option and press Configure. Save the settings after the changes are completed.
An Insulation Resistance test is only carried out when the pumps are not running. The MultiSmart checks if
the pump is currently running and skips the test if it is still running. Insulation Resistance Test can be carried
out automatically over a changeable time period. It can also be done manually from the information screen
(Refer to Section 17.2.4).
Advanced configurations for the Insulation Resistance Test can be done from the Advanced menu.
Browse to Advanced menu to configure settings:
Navigate to the Motor Protection section:
From the tree select: Motor Protection
•
Select the correct pump (i.e. Pump 01) and press
•
Select Insulation Resistance Test (IRT)
•
And again select Insulation Resistance Test (IRT)
•
The following parameters can be set:
Name
Clear To Run
Cool Down Period
(sec)
Enabled?
IRT Hardware Input
MOhms
MOhms
Test Duration
Test Interval
Test Voltage
Warning Enabled
Table 22 – IRT Parameters
Page 130 of 201
MultiSmart Installation & Operation Manual
Description
If linked to a digital input, when true IRT is allowed to run, when false IRT is
blocked. If no tag is assigned then IRT is allowed to run.
The Cool Down Period gives the pump a set amount of time to cool down
before the insulation resistance test is run.
Enables or disables the insulation resistance test.
A pointer to the actual hardware performing the function. For pump 1 it is
usually IRT1. You don't usually need to change this parameter.
Sets a measurement threshold in Mega Ohms. When this is reached a fault
condition is activated.
Sets the measurement threshold in Mega Ohms for the IRT warning to be
generated. Default setting will not fault the pump.
Sets how many seconds the insulation test will last. The recommended time
is 60 seconds.
Time interval between tests in hours. Tests are only conducted when the
pump is stopped and the Cool Down Period has expired.
The insulation tester can operate at either 500V or 1000V.
Insulation Resistance Test Warning Threshold is enabled
and select the pump and press Edit.
+ / - + / -
Pump
+ / -
+ / -
.
+ / -
.
MultiSmart_IO_Manual_A4_v2-22_R15.doc
Default
None
10s
Disabled
1.0MΩ
5.0MΩ
60s
4h
1000VDC
Disabled