Typical Wiring Diagrams Showing A Conventional Starter Wiring; Typical Starter Wiring For A Smoke Control Listed System Today - ABB ACH550 series User Manual

E-Clipse Bypass Configurations for ACH550 Drives
Typical Wiring Diagrams Showing a Conventional Starter Wiring and Use of the
E-Clipse Bypass
Typical system wiring with use of E-Clipse Bypass:
Normal Auto Fire
Auto Start /Stop Shut Down
Damper
End Switch
High
Manual
Pressure
Pressure
Supply Duct
Smoke
Return Duct
Freezestat
Smoke
Auto
Pressure

Typical Starter Wiring for a Smoke Control listed System Today:

X2 E-Clipse Bypass Controller Input
1
2
3
4
(DI1) Start/Stop
5
(DI2) Run
6 Enable
(DI3) High
Priority
7
Safeties
(DI4) Emergency
8
Shutdown
(DI5) Low
Priority
9
Safeties
(DI6) Smoke
10 Control
Normal Operation:
• Close Start/Stop (X2:5)
• Fan starts, assuming
that X2: 6, 7, 8, and 9
are all closed
Emergency Shutdown:
• Open auto fire
shutdown, unit stops
Smoke Control Mode:
• Close contact on X2:10
• Fan starts regardless of
position of internal HOA
switch and inputs
X2:5 and X2:9
• Inputs X2:6, 7 and 8
followed
• Internal overloads
followed
Notes:
1. Pressure cutouts, duct smoke detectors
and auto shutdown are
2-pole.
2. Manual control also activates "auto
control" relays.
31
Installation