E.5 Cable Loss Configuration and Behavior
This section describes the configurable cable loss feature of the drive. This feature offers a user maximum flexibility in
determining drive response to a loss of communication.
u
Drive Behavior at Loss of Communication
After some interval without receipt of a message, the drive can be configured to respond in one of the following manners:
• Continue at last speed
• Continue at last speed with Alarm
• Continue at preset speed
• Ramp to Stop with FB14 fault
• Coast to Stop with FB14 fault
• Emergency Stop with FB14 fault
u
Apogee FLN Points
Three APOGEE FLN points are used to select the desired behavior:
•
POINT 92
– CBL LOSS TMR
•
POINT 91
– CBL LOSS FRQ
•
POINT 90
– COMM FLT ENA
Table E.4 Cable Loss Behavior Summary
Behavior
F6-03
Z3-05
CBL LOSS TMR
(Point 92)
CBL LOSS FRQ
(Point 91)
COMM FLT ENA
(Point 90)
Decelerate to stop (stop time in
C1-02)
FB14 Fault.
Note:
In Bypass Mode,
bypass contactor will
open and motor will
coast to stop.
0
3
Timeout Interval
X
On
Coast to stop
FB14 Fault.
Note:
In Bypass Mode,
bypass contactor will
open and motor will
coast to stop.
1
3
Timeout Interval
X
On
Fast stop (stop time in C1-09)
FB14
Fault
.
Note:
In Bypass Mode,
bypass contactor will
open and motor will
coast to stop.
2
3
Timeout Interval
X
On
Continue at last speed
3
0
0
X
X
Continue at last speed with Alarm
3
1
Timeout Interval
X
On
Continue at preset speed with Alarm
3
4
Timeout Interval
Preset Speed
On
Note:
1. Communication must first be established and then lost for these features to function as described. If a Bypass is powered-up without
a cable connected or with the master controller offline, a communications timeout does not occur.
2. For modes which describe the Bypass running after a communications timeout, a run command must have been issued (RUN ENABLE
(Point 35) = ‘On’ and either CMD RUN.FWD (Point 22) = ‘On’ or CMD RUN.REV (Point 24) = ‘On’) prior to loss of communications.
For safety purposes, the drive will not automatically restart from a stopped condition. If a user requires the drive to restart automatically,
additional external wiring is required to accomplish this (consult factory).
Upon expiration of the communications timeout interval, a CE (Communication Error) fault will be declared and will remain until
communication is restored.
Continue at Last Speed
In this mode, CBL LOSS TMR (POINT 92) is set to 0, disabling the cable loss feature. The other two settings CBL LOSS
FRQ (POINT 91) and COMM FLT ENA (POINT 90) are ignored. If communication is lost, the drive maintains its last
commanded state. The drive will not display an alarm or fault to indicate it has lost communication. This behavior can also
be achieved by setting parameter Z3-05 to 0.
E.5 Cable Loss Configuration and Behavior
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
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E
Apogee FLN Network Protocol
