155
Fig. 135 —
Bypass Control Keypad Description
SMOKE CONTROL MODE
In the Smoke Control (Override 1) mode, the motor is powered by
AC line power through the bypass contactor. The source of the
Smoke Control command is DI 6 and is unaffected by external
stop commands. The VFD Keypad and the Bypass Keypad will
not accept user commands when the system is in
Smoke Control
mode (the keypad user inputs are disabled). The user can switch to
the Smoke Control mode by closing the
Smoke Control
input con
-
tact (DI 6). When the
Smoke Control
input contact is closed, the
system is forced to bypass and runs the motor. The Motor Run
LED flashes green when the system is in override. While in
Smoke
Control
, the system only responds to certain inputs. Normally,
when the
Smoke Control
input contact is switched from closed to
open, the system returns to the operating mode that existed prior to
entering
Smoke Control
and can once again be controlled using the
Drive
and
Bypass
keys. The exception to this is when the
Bypass
Override (Override 2)
input contact is closed, in which case the
system switches to
Bypass Override
operation. See Fig. 136 for
typical wiring diagram.
Fig. 136 —
Smoke Detector Typical Wiring Diagram
PROGRAMMABLE RELAY CONTACT OUTPUTS
The ABB E-Clipse bypass has 5 programmable relay outputs as
standard, see Fig. 134. The default programming descriptions for
these relay outputs is described below.
BYPASS NOT FAULTED
The
Bypass Not Faulted
relay is energized during normal opera
-
tion. The
Bypass Not Faulted
relay is de-energized when a bypass
fault has occurred.
SYSTEM RUNNING
The
System Running
relay is energized when the ABB E-Clipse
bypass System is running. The
System Running
relay provides an
output when the motor is running whether powered by the
ACH550 drive or the bypass.
SYSTEM STARTED
The
System Started
relay is energized when the ABB E-Clipse by
-
pass system is started. Three conditions must be met in order for
the relay to energize:
1. A
Start
command must be present
2. The
Safety Interlock
input contact must be closed and
3. There can be no fault present in the system
BYPASS SELECTED
Relay output four is factory default programmed for Bypass Se
-
lected. The relay will be energized anytime the user has placed the
system in Bypass Mode.
BYPASS AUTO
Relay Output five is factory default programmed for Bypass Auto.
The relay will be energized anytime the user has placed the bypass
in the Auto mode.
esc
ENT
AUTO
BYPASS
DRIVE
BYPASS CONTROL
ENABLED
SELECTED
FAULTED
MOTOR RUN
OFF/RESET
HAND
READY INDICATION
(DISPLAY ILLUMINATED)
DOWN
ESCAPE
ENABLED LED
DRIVE AND BYPASS
SELECTED/FAULTED LED’s
DRIVE/BYPASS
SELECT KEYS
BACK-LIT
LCD DISPLAY
UP
ENTER
ON/HAND KEY
OFF/RESET KEY
AUTO KEY
MOTOR RUN LED
KEY/LED
DESCRIPTION
Up Key
On/Hand Key
The
On/Hand
key can be used to manually
start the motor when the bypass has been
selected as the power source for the motor.
Off/Reset Key
The
Off/Reset
key may be used to manually
stop the motor if the motor is running on
bypass power. The
Off/Reset
key also
resets most bypass Faults. It may take
several minutes before the bypass can be
reset after an overload trip. If a bypass fault
condition is present, the second push of the
Off/Reset
key puts the bypass in the Off
mode.
Auto Key
The
Auto
key selects the
Auto Start
contact
or serial communications as the means for
starting and stopping the motor in the
bypass mode.
Motor Run LED
The
Motor Run
LED is illuminated red when
the bypass has lost its communications link
with the drive or when the motor or drive
protection functions have shut down the
drive.
Drive Key
The
Drive
key selects the drive as the power
source for the motor.
Bypass Key
The
Bypass
key selects the bypass as the
power source for the motor.
Drive Selected/
Fault LED
The
Drive Selected
LED is illuminated green
when the drive has been selected as the
power source for the motor and no drive
fault is present.
The
Drive Fault
LED is illuminated or flashes
red when the motor or bypass protective
functions have shut down the drive.
Bypass Selected/
Fault LED
The
Bypass Selected
LED is illuminated
green when the bypass has been selected
as the power source for the motor and no
bypass fault is present.
The
Bypass Faulted
LED is illuminated or
flashes red when the motor or bypass
protective functions have shut down the
bypass.
Enabled LED
The
Enabled
LED is illuminated green under
the following conditions:
•
Both the safety interlock(s) and Run
Enable contacts are closed.
•
The Safety Interlock(s) contact are
closed with no Start command present
The
Enable
LED flashes green if the Run
Enable contact(s) are closed and a start
command is present.
The
Enable
LED is illuminated red when the
Safety Interlock contact(s) are open.
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 when configured. Internal overloads followed.
Smoke Control Mode:
X2
1
2
3
4
5
DI-1 Start / Stop (required field supplied)
6
DI-2 NOT SELECTED (Damper) Run Enable
7
DI-3 High priority Safety default (programmed)
8
DI-4 NOT SELECTED Emergency Shutdown
9
DI-5 NOT SELECTED (Low Priortiy Safety)
10
DI-6 SMOKE CONTROL
Field Wiring
Factory Wiring
Ground
Digital input common
+24vdc
+24vdc
smoke
return smoke
Freeze
supply smoke
fire
High pressure
damper
Normal