Mcb Led Power-Up Sequence - McQuay MicroTech II Installation And Maintenance Manual

MCB LED Power-Up Sequence

The various LEDs on the MCB are shown in Figure 22.
When power is applied to the MCB the LEDs on the board
should execute a specific startup sequence. This startup
Figure 21:Main control board
BI-1
BI-9
BI-16
+15VDC
POWER
FOR AIs
ANALOG
INPUTS
RS485
ACTIVITY
LED
36
BINARY
INPUTS
......... ......
BI-8
MOD-DCU
CONTROL BOARD
SW-1
BATTERY
SW-4
BACnet MSTP
or LonMark
COMM. MODULE
(OPTIONAL)
RS-232
ACTIVITY
LED
RS485
RS-232
PORT
PORT
sequence consists of 3 main components: LED Operational
Check period, the MCB Error Code Display period and the
MCB Initialization period. These are described in the
following sections.
24VAC INPUT
POWER
.........
BO-1
::::::::::::::::::::
BACnet IP
COMM. MODULE
(OPTIONAL)
IP
ACTIVITY LED
IP
PORT
24VAC
ISOLATION
POWER FOR
AO/BOs
ANALOG
OR
BINARY
OUTPUTS
BO-16
ERROR
LED
McQuay IM 710-1