Wiring Diagrams - Advantage Controls MegaTronMT Installation Maintenance Repair Manual

NOTES:
1. Liquid tight fittings and some labeled signal leads are provided for all signal (low voltage)
connections for both pre-wired and conduit units.
2. Units should be ordered with the appropriate option to provide powered relays designed for the
incoming/outgoing power.
Pre-Wired
Pre-wired units are supplied with a 16 AWG cable with 3-wire grounded USA 120V plug for incoming power,
along with 16 AWG grounded receptacle cords for each output control relay. One pre-wired power cable
is supplied for each bank of five relays, and each power cable must be plugged in to provide power to the
corresponding bank of relays.
Conduit
Conduit units are predrilled at the factory and supplied with conduit knockouts for easy hard wiring to supplied
detachable connectors on the relay card(s) located in the lower section of the controller. Remove the screws
of the lower panel for access.
NOTES:
1. Do not drill holes in upper section of enclosure.
2. All relays provide a N.O. and N.C. output.
3. The control function that activates each relay output is pre-configured at the factory
based on the options selected. To change relay activation, see on page 30.
4. See page 34 for common bleed / blowdown valve wiring.
5. Refer to label inside lower panel cover for specific relay board configuration supplied.
6. Relays configured as "dry contact" should only have D.C. voltage ran through them. The GND
connection point replaces the NEU when configured for dry contact. (Example: Use GND and N.O.
for a normally open dry contact relay output.)
WARNING: If jumpers are not configured for dry contact, line voltage will be supplied.
!
Rev. I Relay Card Wiring
FUSE
NEU
GND
Relay 1
N/O
*6, 11, or 16
N/C
FUSE
NEU
GND
Relay 2
N/O
*7, 12, or 17
N/C
* Relays 6-20 only available on multi-system controllers.
FUSE
NEU
GND
Relay 3
N/O
*8, 13, or 18
N/C
POWER
INPUT
RIBBON CABLE
2 10
9
1
Relay Card Rev. I
04/2023
DRY CONTACT
POWERED RELAY
FUSE
NEU
GND
Relay 4
N/O
*9, 14, or 19
N/C
FUSE
NEU
GND
Relay 5
N/O
*10, 15, or 20
N/C
POWER
INPUT
Rev. R Relay Card Wiring
FUSE
NEU
GND
Relay 1
N/O
*6, 11 or 16
N/C
FUSE
NEU
GND
Relay 2
N/O
*7, 12, or 17
N/C
* Relays 6-20 only available on multi-system controllers.
FUSE
NEU
GND
Relay 3
N/O
*8, 13, or 18
N/C
Relay Card
POWER INPUT
5
2 10
1 9
RIBBON CABLE
POWERED RELAY
DRY CONTACT
FUSE
NEU
GND
Relay 4
N/O
*9, 14, or 19
N/C
FUSE
NEU
GND
Relay 5
N/O
*10, 15, or 20
N/C
POWER INPUT
Rev. R
04/2023