65-0315—02
4
Fig. 5. S7999D wiring diagram for mulitple Sola controls (Lead Lag set up is shown as example).
M32737
DISPLAY CAN ALSO BE CONNECTED TO MB2; A, B, C
AND THE SOLA SLAVES NEED TO BE WIRED TO MB1.
CONTROLLER HAS TWO AVAILABLE MODBUS
CONNECTIONS: THIS CONFIGURATION REQUIRES ONE
FOR CONTROL LEAD LAG COMMUNICATION AND ONE
FOR A S7999D SYSTEM DISPLAY.
UP TO A MAXIMUM OF 8 SOLA SLAVES IN A
LEAD LAG NETWORK.
SIZE 24V TRANSFORMER ACCORDING TO LOAD
REQUIREMENT.
ENSURE THE S7999D 24 VAC COM TERMINAL AND
THE SOLA COMMON TERMINAL (J8-2) ARE BOTH
CONNECTED TO THE 24 VAC RTN (RETURN)
OF THE EXTERNAL TRANSFORMER.
TO PROTECT AGAINST CONDUCTED AND RADIATED
TRANSIENT NOISE, USE CLAMP FILTERS (INCLUDED
IN 50063482-001 BAG ASSEMBLY) AS ILLUSTRATED IN
FIGURES 2 AND 3.
SOLA LL MASTER
AND SLAVE 1
2
C
B
A
C
B
A
1
J8
J3
MB1
MB2
24 V
SOLA SLAVE 2
3
1
2
2
4
4
5
6
5
3
1
S7999D OI DISPLAY
POWER
C
B
A
C
B
A
COM
24 VAC
COM 1
COM 2
24 VAC RTN
24 VAC
2
C
B
A
C
B
A
1
J8
J3
MB1
MB2
24 V
SOLA SLAVE 3
2
C
B
A
C
B
A
1
J8
J3
MB1
MB2
24 V
SOLA SLAVE 4
2
C
B
A
C
B
A
1
J8
J3
MB1
MB2
24 V
6
