R000226 BP1 Automation
23
v.0.1 03/21
Appendices
A.1 Installation, BP1 Retrofit version p/n A000392
This Appendix describes the replacement of a JNIOR with the BP1 control board into an
existing IMC-3J automation chassis.
1. Unplug the power supply and remove the IMC3 automation tray from the rack (or slide
it outward).
2. Unplug the RS-232 serial cable from the JNIOR and the front panel, set the cable
aside or discard it – it will not be used with the BP1.
3. Unplug the five wire harness connectors from the JNIOR.
4. Loosen and remove the two screws holding the JNIOR to the tray, and remove the
JNIOR.
5. Remove the BP1 control board from its protective antistatic bag. If you are in an area
with low humidity or prone to static electricity, touch some grounded metal to discharge
any static prior to handling the BP1 board. Wear a grounding wrist strap if one is
available.
6. On the BP1 control board, check the JP1 setting. If the jumper is placed in the “HOLD”
position, the fire alarm input will be latched and will hold that state indefinitely, until it’s
released with the button on the front panel. If the jumper is placed in the “PULSE”
position, when an input from the fire panel is detected the fire alarm output will be
pulsed for ½ second. The factory setting for the jumper is the “HOLD” position. The
LED on the front of the chassis will illuminate as long as the output is active, whether
pulsed or held.
Note: for this retrofit configuration the TB4 input won’t be used and the JP2 jumpers
will have no effect. They may be ignored.
7. Set the BP1 control board in place. Use the previous mounting screws,
however if
there were flat washers under the screw heads with the JNIOR, discard them
–
they aren’t needed and may short out to the circuit traces. Tighten the two screws.
Note: If there’s interference between the BP1 control board and the Fire Alarm Relay
Board, loosen the two screws holding the fire alarm relay board, then push it gently to
the side and retighten the screws.
8. Reconnect the five harness connectors to the new board.
