Ampcontrol Pty Ltd
– ABN 28 000 915 542
IPD USER MANUAL
IPDB014 Version 14
– SEP/2020
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 33 of 96
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7
REMOTE DISPLAY MODULE (RDM-D)
The Ampcontrol RDM-D is the user interface for the IPD relay. The RDM-D consists of a two line, 16
character LCD display, LED status indicators and a tactile keypad.
The display level is changed with the <UP> and <DOWN> arrow keys and the <LEFT> and <RIGHT>
arrow keys control the display position. The display map (Drawing
, in Appendix A
– Drawings)
shows the layout of the various display screens. The module is approved to Ex ia Intrinsic Safety
Standards so that it can be installed outside of a flameproof enclosure.
The healthy LED located top centre of the module flashes at 3Hz to indicate healthy communications
with the relay. (A flash rate of 1Hz indicates that the module is powered, but is not receiving data).
The module displays the following information:
1. IPD Status.
2. Software version and serial number.
3. Operational information from the protection functions, e.g. earth leakage current, earth continuity
resistance etc.
4. System information including the line voltage and current.
5. Status of digital inputs and relay outputs.
6. Protection trip settings, which can be viewed at any time. Authorised personnel can modify these
settings via the RDM, thus eliminating the need to open the flameproof enclosure.
7. Data logging information. The 120 most recent events are logged, with time and date, in a non-
volatile memory, for example power-up, trip, reset, close etc.
NOTE
A review of the
first few log events
is a useful tool for
fault finding
.
The IPD status display is one of the most useful features of the relay’s display system and should be
viewed as the first step in fault finding. The Status display is the default screen on power up and
indicates what the IPD Relay requires in order to allow the outlet to close. These messages are useful to
unskilled personnel. If more than one message is active the display cycles around all active messages
showing them for 1 second each.
Through the use of the serial communications port, PLC’s and SCADA Systems can be configured to
display the same messages that appear on the Remote Display Module. This helps to provide consistent
information to operators.
