Yaskawa APOGEE FLN P1 - Manual (Page 34)

n Continue at Last Speed
Cable Loss Timeout (AO 21) is set to 0, disabling the cable loss feature in this mode. The
other two settings Cable Loss Speed (AO 22) and Communication Fault Enable (BO 11) are
ignored. The drive simply maintains its last commanded state if communication is lost. The
drive will not display an alarm or fault to indicate it has lost communication. This behavior
can also be achieved by setting parameter F6-01 to 3. The drive will display an alarm and
continue running. The Communication Fault Enable (BO 11) must be enabled and Cable Loss
Timeout (AO 21) should be set to a value other than 0 for this specific condition.
n Continue at Preset Speed
Cable Loss Timeout (AO 21) is set to the desired interval, Cable Loss Speed (AO 22) is set
to the desired preset speed and F6-01 is set to 4 in this mode. The drive speed command (AO
1) is set to the Cable Loss Speed (AO 22) and the drive continues running at this new speed
if the time between messages exceeds the timeout interval. Communication Fault Enable (BO
11) must be set to ON.
n Stop with Fault (BUS)
Communication Fault Enable (BO 11) must be set to ON. Cable Loss Timeout (AO 21) is set
to the desired interval and parameter F6-01 is set to a value of 0,1 or 2 in this mode. If the
time between messages exceeds the timeout interval, the drive will declare a BUS fault and
the drive speed command (AO 1) will be set to 0. The stopping method is determined by the
setting of F6-01.
• F6-01=0 selects Ramp to Stop. The deceleration time or the slope of the ramp is determined
by the setting of drive parameter C1-02.
• F6-0 =1 selects Coast to Stop. The drive does not attempt to control the rate of deceleration.
• F6-0 =2 selects Emergency or Fast Stop. The deceleration time is determined by the setting
of drive parameter C1-09.
Note: The behavior of the drive at cable loss is controlled by parameter F6-01. This drive parameter works
with the points as described in the table above to determine how the drive will respond to a cable loss.
The drive will continue in its last state if the cable loss fault is disabled. The drive will continue to run
at the last commanded frequency if running.
9 Metasys N2 Communications
34 YASKAWA TOEP YAICOM 13 Metasys N2 & Apogee FLN P1 SI-J3 Installation & Technical Manual