24
BAS-SVX48H-EN
Figure 7. 1,2,3 Motor Speeds and ECM Var Speed Supply Fans (Opt Exh Fan)
VAC
24
XFRM
VAC
24
VAC
24
BI
1
BI
2
BI
3
LINK
IMC
+
24
VDC
BI
4
AO1
BI
5
AO2
UI
1
UI
2
AI
3
AI
2
AI
1
AI
4
AI
5
P
1
P
2
CNCNO
BO3
CNCNO
BO2
CNCNO
BO1
RELAYS
ADDRESS
TRIAC SUPPLY TRIACS
A
BO9BO8BO7BO6BO5BO4
A BB
TX
RX
LINK
IMC
SERVI
C
E
SERVICE TOOL
CONNECT AC POWER TO THE TRAIC SUPPLY TO POWER THE TRIACS
BO1 BO2 BO3 BO4 BO5 BO6 BO7 BO8 BO9
1
2
3
4
5
6
7
8
9
IM
C
1
IM
C
1
3
4
5
6
7
1
2
3
4
5
6
7
8
9
8
9
CNCNO
BO3
CNCNO
BO2
CNCNO
BO1
RELAYS
Exhaust
(optional)
High
24 Vac
24 Vac
24 Vac
High
High
Med
Low
Low
Exhaust
(optional)
CNCNO
BO3
CNCNO
BO2
CNCNO
BO1
RELAYS
CNCNO
BO3
CNCNO
BO2
CNCNO
BO1
RELAYS
Supply fan motor
Supply fan motor
Supply fan motor Exhaust fan motor
Exhaust fan motor
J21
20
J15
J21-5
J21-6
J2
IMC
ECM Engine
Module
+ J11-3
- J11-4
GND
24Vac-Y
24Vac-B
BI1-H
BI2-M
BI3-L
BI4-H1
BI5-EH2
AI1-Sens
AI2-Sens
CI1-RPM
CI2-RPM
AI1-COM
AI1-COM
AI1-0-10V
AO1-PWM
AO-COM
AO2-PWM
BO1
BO1
Connect IMC using
J21-5 and J21-6
Single-Tier
Terminal
Connections
2-Speed Fan Terminal Connections
1-Speed Fan Terminal Connections
3-Speed Fan Terminal Connections
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