TECO A510s - Acceleration Speed Gain Adjustment; Target Main Circuit Voltage; Reference Frequency Loss Detection; Reference Frequency Loss Level

4-247
- When DC voltage reaches the setting of 11-39 (stop voltage of OVP deceleration), it will decelerate based on
the set value of 00-24 (Tdec4)
- Deceleration rate is linear based on the slope defined by the start point (11-38) and end point (11-39).
4). Enable the OVP function with parameter 11-40 set to 1 or 2. The following parameter default values will be
changed when the OVP function is enabled:
07-12=1 (Stop mode: coast to stop)
00-14(Tacc1)= 5.0 Sec(the frequency reference acceleration rate when DC voltage is too high.)
00-22(Tdec3)= 20.0 Sec(low setting point of OVP deceleration rate).
00-24(Tdec4)= 100.0 Sec(high setting point of OVP deceleration rate).
Note: S curve should be disabled when using the OVP function (11-04~11-07=0.0sec).
When 11-40=2: OV prevention Mode 2
The process of OV prevention mode 2 is the same as that of OV prevention mode 1 but it strengthens more the
part of DC BUS over the deceleration stop voltage of OV prevention (11-39) in Fig.4.4.92. It can accelerate
frequency compensation to avoid OV protection by increasing frequency gain of OV prevention 2 (11-28).
When 11-40=3: OV prevention Mode 3
T=The inverter raise the output frequency temporarily to avoid OV, the output frequency wont higher than the
value of 01-02 (Maximum Output Frequency of Motor 1).Please adjust the value of 01-02 according to application.
If it still occur OV in 11-40=3, please raise the value of 11-64 in 0.1 unit.
11- 64 Acceleration Speed Gain Adjustment
Range
0.1~10.0
It will influence the speed and current if the value of 11-64 is too high.
11- 65 Target Main Circuit Voltage
Range
200V: 200V~400V
400V: 400V~800V
575V: 520V~1040V
690V: 624V~1248V
11- 41 Reference frequency loss detection
Range
0:
when reference frequency disappears, the deceleration will stop.
1: when reference frequency disappears, continue to operate according to the proportion of
reference frequency x 11-42.
11- 42 Reference frequency loss level
Range
0.0~100.0 %
A Reference frequency loss is detected when the frequency command falls 90% within 360ms.
The action performed when a reference loss is detected is set with parameter 11-41.
11-41=0: Inverter will decelerate to a stop when a reference loss is detected.
11-41=1: Inverter will continue to operate; reference frequency is the value of Maximum Output Frequency of
Motor 1 x the level set in parameter 11-42.