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:
and select the pump and press Config.
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 an alarm 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:
Navigate to the Motor Protection section:
• From the tree select: Motor Protection
Pump
• 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 Description Default
Clear To Run
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.
None
Cool Down Period
The Cool Down Period gives the pump a set amount of time to cool down
before the insulation resistance test is run.
10s
Enabled? Enables or disables the insulation resistance test. Disabled
IRT Hardware Input
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.
MOhms
Sets a measurement threshold in Mega Ohms. When this is reached, a fault
condition is activated.
1.0MΩ
MOhms
Sets the measurement threshold in Mega Ohms for the IRT warning to be
generated. Default setting will not fault the pump.
5.0MΩ
Test Duration
Sets how many seconds the insulation test will last. The recommended time
is 60 seconds.
60s
Test Interval
Time interval between tests in hours. Tests are only conducted when the
pump is stopped and the Cool Down Period has expired.
4h
Test Voltage The insulation tester can operate at 250V, 500V or 1000V. 1000VDC
Warning Enabled Insulation Resistance Test Warning Threshold is enabled Disabled
Table 25 – IRT Parameters
Page 154 of 260 MultiSmart_IO_Manual_R20
To Next Page
Loading...
Need help?
General