gefran VDI100 Series Instruction Manual page 168

Application examples
Example A: Speed follower from external PG
•
Use the pulse input signal as frequency reference or synchronization operation. Refer to Fig. 4.4.31.
Parameter settings:
1. Frequency reference selection: 00-05=4 (Pulse input)
2. Pulse input's function selection: 03-30=0 (General pulse input)
3. Pulse input scale: 03-31 (set the number of pulse in Hz to match maximum output frequency, 01-02)
4. Pulse input gain: 03-32 (Set the input gain of the pulse frequency set by 03-31)
5. Pulse input bias: 03-33 (Set the input bias of the pulse frequency set by 03-31)
6. Pulse input's filter time: 03-34 (if the pulse input is unstable due to the interference, increase value.)
Use the forward and reverse multi-function inputs to choose motor direction.
Note:
For higher accuracy use PG feedback in SV or V / f + PG control mode.
Example B: Speed follower using two inverters
•
Inverter #1 parameter settings: Frequency reference from PI signal (Master PG)
1. Frequency reference selection: 00-05=4 (Pulse input)
2. Pulse input's function selection: 03-30=0 (General pulse input)
3. Pulse input scale: 03-31 (set the number of pulse in Hz to match maximum output frequency, 01-02)
4. Pulse input gain: 03-32 (Set the input gain of the pulse frequency set by 03-31)
5. Pulse input bias: 03-33 (Set the input bias of the pulse frequency set by 03-31)
6. Pulse input's filter time: 03-34 (if the pulse input is unstable due to the interference, increase value.)
7. Pulse output function selection: 03-35=1 (Pulse output is output frequency
8. Scale pulse output parameter 03-36 to 100% of output frequency
Inverter #1 parameter settings: Frequency reference from analog signal
1. Frequency reference selection: 00-05=1 (Analog input)
2. Pulse output function selection: 03-35=2 (Pulse output is output frequency)
3. Scale pulse output parameter 03-36 to 100% of output frequency
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Figure 4.4.31 Speed follower from external PG
Fwd Run/Stop
Rev Run/Stop
(*1 )
PG
Figure 4.4.32 Speed follower using two inverters
FWD Run/Stop S1
REV Run/Stop S2
24VG
PI
Master PG
etcs.
Inverter
S1
S2
24VG
PI
VSS
(INV1)
M1
FWD Run/Stop
REV Run/Stop
+5V
2.2K
Ω
PO
GND
GND
M
(INV2)
M2
S1
S2
24VG
PI
GND
VDI100 • Instruction manual