Ampcontrol Pty Ltd
– ABN 28 000 915 542
IPM V2 USER MANUAL
IPM2B003 Revision 15
– MAY/18
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 54 of 83
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12.6.3 Outlet Control
The outlet can be energised by local or remote operation depending on the „Remote Start‟ option. The
selection is “Yes” or “No” (Level 6, Screen 16).
If “Yes” is selected the relay ignores the local start input thus allowing operation of the outlet from the
remote machine. Both the external and local stop buttons will turn off the outlet.
If “No” is selected the local start/stop buttons control the outlet.
12.6.4 Start Mode
The Start Mode is selected at (Level 5, Screen 3). The possible settings are K/Ext, Ext, K&Ext, Modbus
and Snore. The start/stop logic operates as follows:
1. The external stop digital input and the front keypad stop button will always stop the relay,
regardless of the settings for „Start Mode‟. In all cases only one of the stop inputs needs to be
active to stop the relay.
2. K/Ext mode
– Relay can be started with either an external start or the keypad.
3. Ext mode
– Only the external start is used. The keypad start is disabled.
4. K&Ext mode
– Both the external start and the front panel keypad start button needs to be active
to start the relay.
5. Modbus mode
– Not implemented.
6. Snore mode
– The parameters for Under Current Trip, Start Mode and the Snore time delay need
to be set for your application. Extra protection against accidentally selecting this mode is provided
by requiring the external digital input to be closed before this mode will start.
12.6.5 Operational Sequence (Insulation Test and Burp Function selected)
Before an outlet can be energised there should be no protection faults present.
Once the start button is operated an insulation test is performed. If the result of this test is satisfactory
the Burp Phase is initiated. When the Burp Phase is completed the IPM Relay goes into the run mode.
A time delay of 5 seconds is allowed for the Main Contactor Interlock (MCI) to close.
If it does not
close within this time, then the run mode is exited.
If a stop input is closed while the relay is in run mode, the run is cleared, and the MCR relay de-
energises. The event log reads “Stopped”.
While the main contactor is closed, the MCI input is continuously monitored. If it opens, the run is
cleared and the MCR relay de-
energises. In this case the event log records “MC Opened” which
indicates that the outlet was turned off by something other than the IPM Relay, for example, open
circuited main contactor coil or control supply.
It should be noted that if the main contactor does not close when the MCR relay closes and the
start/stop conditions are maintained, then the IPM will cycle through the following start sequence:
testing, run, stopped, pause then repeat the sequence while ever the start input is closed.