gefran VDI100 Series Instruction Manual page 169

Inverter #2: 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.)
Note:
When pulse output function is active, it is required to use the external pull-up resistor at the terminal of PO (the upper
limit current of PO is 50mA)
• Example C: Synchronized operation using pulse input
Connect pulse signal of an external pulse generator to the pulse input terminal PI of multiple follower inverters
for output speed synchronization.
Follow inverter #1 and Follower #2 parameter settings:
1. Frequency reference selection: 00-05=4 (Pulse input)
2. Pulse input's function selection: 03-30=0 (General pulse input)
3. Set one of the Multi-function inputs Sn: 03-00 ~ 03-07=32 (Synchronization command)
• Example D: Synchronized operation of using pulse output master follower
VDI100 • Instruction manual
Figure 4.4.33: Synchronized operation of using pulse input
(Slave)
PI
A/B
PG IM
Figure 4.4.34 Synchronized operation master follower
(Master)
Frequency
PO
Reference
03-00 ~
03-07=32
Sync
A/B
PG IM
Pulse
(Slave)
Input
PI
SYNC
IM PG
(Synchronized Operation)
Pulse
(Follower)
Input
PI
SYNC
03-00 ~
03-07=32
Sync
IM
(Synchronized Operation)
A/B
A/B
PG
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