Bard MC500 Series User Manual

Manual 2100-746D
Page 19 of 59
Basic Controller Input/Output
Specifications
(located on main controller board—units 1-3 and
secondary control board—units 4-6)
Each Unit Outputs
R – 24VAC hot
C – 24VAC common
W1 – Heat
W2 – 2nd stage electric heat
EC - Unused
Y1 – 1st-stage cool
Y2 – 2nd-stage cool
G – Fan
O/B – Heat pump reversing valve
A – Ventilation
D – Dehumidication
H – Output for humidier relay
General Inputs
Emergency Off Shipped with jumper installed.
Input Changing state of input disables all
units. Loss of continuity between
terminals triggers alarm.
Local Main temperature/humidity sensor
Rem 1 Optional remote indoor temperature
sensor
Rem 2 Optional remote indoor or outdoor
sensor
Gen Run Input Generator interface. Contact closure
(continuity) triggers alarm.
Theft Input Theft (Bard Guard) input. Contact
closure (continuity) triggers alarm.
Vent Input Ventilation input. Contact closure
(continuity) triggers alarm.
Filter Input Dirty lter input. Contact closure
(continuity) triggers alarm.
Dust Input Dust sensor input. Contact closure
(continuity) triggers alarm.
LOR Input Alarm relay input. Contact closure
(continuity) triggers alarm.
ECON Unused
AUX 1-6 IN Unused
Alarm Board Specifications/Features
MC5000 Alarm Board I/O
NOTE:
If this alarm board was not originally factory
installed, it can be field installed at any time.
The Bard part number for the MC5300 alarm
board is 8612-068. The Bard part number for
the MC5600 alarm board is 8612-069.
Update kits are available as follows:
8620-321 Main Alarm Board Upgrade Kit
(includes P/N 8612-068)
8620-322 Secondary I/O Board Upgrade Kit
(includes P/N 8612-067)
8620-323 Secondary Alarm Board Upgrade Kit
(includes P/N 8612-069)
NOTE:
All alarm and output relays are dry contacts with
ratings up to 1A @ 30 VDC or 1A @ 125 VAC.
NOTE:
All alarm relay outputs have 5-second delay
before issuing to protect against nuisance alarm
signals.
Alarm Board Contacts
Alarm Board 1 Outputs
• UTILITY POWER (Relay Output NO, NC)
• GENERATOR (Relay Output NO, NC)
• 2ND STAGE (Relay Output NO, NC)
• CONTROL FAIL (Relay Output NO, NC)
• LOCK OUT 3 (Relay Output NO, NC)
• LOCK OUT 2 (Relay Output NO, NC)
• LOCK OUT 1 (Relay Output NO, NC)
• EMERG OFF (Relay Output NO, NC)
• HIGH TEMP 1 (Relay Output NO, NC)
• HIGH TEMP 2 (Relay Output NO, NC)
• LOW TEMP (Relay Output NO, NC)
• POWER LOSS 1 (Relay Output NO, NC)
• POWER LOSS 2 (Relay Output NO, NC)
• POWER LOSS 3 (Relay Output NO, NC)
• THEFT (Relay Output NO, NC)
• FILTER (Relay Output NO, NC)
• VENT (Relay Output NO, NC)
Alarm Board 2 Outputs
• POWER LOSS 6 (Relay Output NO, NC)
• POWER LOSS 5 (Relay Output NO, NC)
• POWER LOSS 4 (Relay Output NO, NC)
• LOCK OUT 4 (Relay Output NO, NC)
• LOCK OUT 5 (Relay Output NO, NC)
• LOCK OUT 6 (Relay Output NO, NC)

Bard MC500 Series Specifications

General

Brand	Bard
Model	MC500 Series
Category	Controller
Language	English