Yaskawa Varispeed 626M5 - Manual (Page 116)

Trial Operation
6.4.2 Soft Start Time Setting (T
SFS
: C1-10)
6 -10
6.4.2 Soft Start Time Setting (T
SFS
: C1-10)
The Inverter speed base is the time set to be taken from 0 min −1 . to the rated speed (C1-26), or from the
rated speed setting to 0 rotations/min. The reference/time relationship is shown in the following diagram.
The soft start time can be set between 0.1 and 180.0 s.
The acceleration and deceleration times may be longer than the soft start time setting due to load inertia.
Speed reference
Rated speed (C1-26)
Speed base
Time (s)
(%)
100
0
T
SFS
T
SFS Speed
reference
and
base
Fig 6.3 Soft Start Time Setting
6.4.3 Load Factor Meter Full Scale (LM
FS
: C1-18)
The load factor meter displays the output ratio (in %) over the Motor rated output while the Motor is operat-
ing. Set the full scale value (i.e., the percentage value over the Motor continuous rating) of the load factor
meter using control constant C1-18. The setting can be between 120% and 500%.
6.4.4 Zero Speed Detection Level (ZS
LVL
: C1-19)
Use this constant to set the detection level for the zero speed signal. The standard setting is 30 min −1 . The
setting can be between 3 and 60 min −1 . As shown in the following diagram, the operation point has an hys-
terisis of ±2 min −1 .
Lit when Z
SPD
is ON
(U1-10 display)
ON (contact closed)
OFF (contact open)
Motor speed
−2 +2
C1−19
0
Signal
output
Fig 6.4 Zero Speed Signal Detection Level and Operation Display
6.4.5 Speed Agree Width (AGR
BD
: C1-20)
Use this constant to set the operation level of the speed agree signal (AGR) (ON when the speed agrees).
The speed agree width can be set between 10% and 50%. The standard setting is 15%.
Lit when AGR is ON
(U1-10 display)
Standard setting
Operating
area
Note: The speed deviation shows the % value when
S
100
(C1-26) is taken to be 100%.
Setting
width
Operating area
Speed
deviation
(%)
0.24
1.2
10
15
50
Speed reference (%) 100
Fig 6.5 Speed Agree Width Settings and Operation Display
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