Ampcontrol IPM V2 - 12.6 System Control

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 53 of 83
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12.6 System Control
12.6.1 Digital Inputs
The IPM provides six (6) voltage free digital inputs for correct operation. To activate an input a
connection needs to be made from '+DiPwr' terminal to the respective digital input‟s terminal.
IPM Dig Inputs 4
ExtRst¡/¡ Lock¡_¡
ExtStp¡/¡ Aux¡/¡
ExtStr¡/¡ A/O 20.0mA
 L2: Displays the status of the external reset and the lock inputs.
 L3: Displays the status of the external stop and the auxiliary inputs.
 L4: Displays the external start input and the analogue output in mA.
The function of each input is as follows:
1. Lock: The lock input needs to be closed whenever changes to the relay settings are being made.
If the lock input is not closed then the settings cannot be changed.
The lock input must also be closed to reset the thermal memory to allow an emergency restart.
To perform a reset, the motor must be stopped (MCI open) and both the reset key and the lock
input must be held closed for 1.5 seconds. This will reset the „Thermal Accumulator‟ and allow
the motor to be started immediately.
2. Reset: The reset digital input performs the same function as the keyboard reset allowing for
external/remote resetting of trips. To reset a trip, an open to close transition on the reset input (or
reset key) is required.
3. MCI: The Motor Contactor Interlock input provides the IPM relay with the status of the motor
contactor. Its status is used by the thermal modelling to activate the 'Cooling Multiplier' and also
provides the basis for Motor Contactor Fail (MCF) monitoring.
4. Digital: This is an auxiliary digital input.
5. Ex-Start: This input allows the installation of an external start button.
6. Ex-Stop: This input allows the installation of an external stop button.
12.6.2 Output Relays
The IPM provides three relay outputs for correct operation. All relay contacts are rated at 5A/190VAC.
1. MCR: (Main Trip Relay). This relay energises when there are no trips, and drops out whenever a
trip occurs. A normally open and a changeover set of contacts are provided.
2. ALM: (Alarm Relay). This relay energises whenever there are alarms active and drops out when
all alarms are clear. One changeover set of contacts is provided.
3. CBR: (CBR Relay). This relay is normally energised and drops out if there is a short circuit trip or
a motor contactor fail trip. One changeover set of contacts is provided.
IPM Relay & Keys 4
CBR:In. Tst MCR:out
ALM:out ¡/¡ MCI ¡/¡
Str¡/¡ Rst¡/¡ Stp¡/¡
 L2: Displays the status of the CBR and MCR Relays.
 L3: Displays the status of Alarm Relay, the Test key and the Main Contactor input.
 L4: Displays the status of the Start, Reset and Stop Keys.