Remove And Restore Power; Remove Power From The Controller; Reconnect Power To The Controller - ABB RMC-100 User Manual

IMPORTANT NOTE: A backward clock change uses two records to maintain data integrity to
ensure that it does not overwrite previously recorded data. If it is necessary to make small
backward time changes of less than one hour, wait until the current hour has progressed far
enough to make a change that does not cross an hour boundary.
8.7

Remove and restore power

Remove and restore power in the order that applies to the power mode.
NOTICE – Equipment damage. Remove the external power/charger and battery
connections before removing all other cables, boards, and field connections. Connection or
disconnection of cables and wires on the electronic board while power is connected can
damage the electronic components.
8.7.1

Remove power from the controller

It might be necessary to remove power from a controller for maintenance. This procedure describes
the removal of the power port terminal connectors from the RMC. You do not need to remove
individual wires.
IMPORTANT NOTE: Do not remove power if the controller does not have the lithium battery
enabled or in place. If the lithium battery is not enabled, has failed, or was removed, the clock
resets to factory defaults. This requires a change according to section 8.6, Change the clock. See
section 8.8.5, Replace the lithium battery.
Follow the steps based on the type of power mode:
IMPORTANT NOTE: Pry terminal connectors off the electronic board with a slotted screwdriver.
1. For battery mode:
a. Remove the CHARGER/EXT PWR terminal connector.
b. Remove the BAT port terminal connector (green connector).
2. For external power mode, remove the CHARGER/EXT PWR terminal connector
8.7.2

Reconnect power to the controller

Follow this procedure to reconnect the power port terminal connectors or the power cables back into
the RMC. You do not need to rewire if the connectors are not removed from the cables. This procedure
assumes wiring was left intact before terminal connector removal.
NOTICE – Equipment damage. Do not reconnect the external power/charger and battery
until all service procedures are complete. This includes reconnecting all wires, plugs,
terminations, and peripheral equipment. Otherwise, property damage can result. Do not
perform this procedure until instructed to do so.
Follow the instructions based on the type of power mode.
WARNING – Bodily injury. Always connect the battery before connecting the charger.
1. For battery mode:
a. Reconnect the BAT terminal connector (green connector) on the battery cable into the
board.
b. Reconnect the CHARGER/ EXT PWR terminal connector on the charger cable into the board.
2. For external power mode, reconnect the CHARGER/ EXT PWR terminal connector on the
external power source cable into the board.
3. Observe the power-on sequence information on the LCD to confirm that the controller is
receiving power (see details in section
the sequence is complete.
1 9 6 | R MC-1 00 | 2 10 5 55 2MN A E
3.7.1 Power-on sequence). When DATE/TIME displays,