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S7999B, S7999C SOLA LOCAL OPERATOR INTERFACE
MEAN WELL S-25-12
POWER SUPPLY
WIRING KEY
LINE VOLTAGE
LOW VOLTAGE
DATA
1
DO NOT CONNECT THE S7999B TO TERMINALS 1 2 3.
THIS WILL RENDER THE DISPLAY INOPERABLE.
2
DISPLAY CAN ALSO BE CONNECTED TO MB2; A, B, C
AND THE SOLA SLAVES NEED TO BE WIRED TO MB1.
3
CONTROLLER HAS TWO AVAILABLE MODBUS
CONNECTIONS: THIS CONFIGURATION REQUIRES ONE
FOR CONTROL LEAD LAG COMMUNICATION AND ONE
FOR A S7999B SYSTEM DISPLAY.
THERE IS NOT A CONNECTION AVAILABLE FOR A
LOCAL TOUCHSCREEN DISPLAY (S7999C).
THE ECOM CONNECTION IS AVAILABLE FOR
CONNECTIONS OF A LOCAL KEYBOARD
DISPLAY MODULE.
4
UP TO A MAXIMUM OF 8 SOLA SLAVES IN A
LEAD LAG NETWORK.
BUILDING AUTOMATION
SYSTEM (BAS)
CONFIGURATION
Connect the BAS Modbus wiring to COM2 of the S7999B as
shown in Fig. 5.
65-0303—05
120
L1
VAC
L2
NEUTRAL (L2)
N
120VAC (L1)
L
EARTH
GROUND
12 DC OUT +
V+
DC OUT
V-
(COMMON GND)
VADJ
Fig. 4. S7999B wiring diagram for lead lag.
S7999B
AS SYSTEM DISPLAY
COM1
1
2
3
4
5
6
7
GND
(B)
N/C
N/C
(A)
+12
+12
(C)
A
B
C
MB1
3
A
B
C
MB1
A
B
C
MB1
A
B
C
MB1
4
Ensure all S7999B devices have unique Modbus addresses as
defined in Fig. 5.
6
COM2
8
9
(A)
(B)
2
A
B
C
1
2
3
MB2
ECOM
J3
SOLA LL MASTER
1
AND SLAVE 1
A
B
C
1
2
3
J3
MB2
ECOM
SOLA SLAVE 2
A
B
C
1
2
3
J3
MB2
ECOM
SOLA SLAVE 3
A
B
C
1
2
3
J3
MB2
ECOM
SOLA SLAVE 4
M32005
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