Advantage Controls MegaTrom XSi Product Manual page 5

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 13.
4. Refer to label inside lower panel cover for specific relay board configuration supplied.
5. 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.
Relay Card Wiring
Ribbon Cable
10
2
9
1
Dry contact
115volt relay
FUSE
FUSE
INPUT
Motherboard Connections
VDC Output
Connections
Gnd
Gnd
-12
-12
+12
+12
+5
+5
Rev. I Relay Card
Powered relay Dry contact
System 4-20mA Comm Card
Open
Slot Slot
LED
Cable
Rev N Relay Board
MegaTron relay card revision N adds a 15 amp fuse on the incoming power
to the board and small LED's for each realy to indicate when the motherboard
has called for it to be activated.
Rev. N Relay Card
Relays are shown configured for powered outputs.
[ Change jumpers to these configurations for dry contact. ]
Relay Fuses
are 3 amp
R1
NEU
GND
N/O
N/C
R2
Relays
1-3
NEU
GND
N/O
N/C
R3
NEU
GND
N/O
N/C
Flow Meter Inputs
+5
Input 1
Slot
Input 2
Input 3
Input 4
Gnd
Gnd
5
2 10
FUSE R1
1 9
LED
Relay FUSE
R4
1
1
Relay
LED
4
4
FUSE R2
LED
Relay
2
2
Relay
LED
5
5
R5
FUSE
FUSE R3
LED
Relay
3
3
Incoming
Power Fuse
Rev N
15 amp
Relay Card
H N G
Incoming
Power
System Card Connections
Digital Input Card
Ground
Digital Input 5
Digital Input 4
Digital Input 3
Ground
Digital Input 2
Digital Input 1
Note: Use 22 AWG
(.76 mm) twisted
pair shielded wire
for all of these low
voltage signal
connections.
LED
R4
NEU
GND
N/O
N/C
R5
Relays
4 & 5
NEU
GND
N/O
N/C