6.2 PG Interface Expansion Card
6-37
Chap. 6
CONTROL OPTIONS
(2) Pulse train operation using a pulse transmitter
• During pulse train operation, function code acceleration and deceleration time settings are disabled. Perform
frequency control with the pulse transmitter. Starting operation while a high-frequency pulse train command
has been given may cause the motor to accelerate rapidly.
Risk of bodily injury
Start and stop operation by simultaneously manipulating the [FWD] terminal and the contact input [SYC].
Turning [FWD] on alone will trigger operation with another speed command.
The acceleration and deceleration times cannot be controlled by the FRENIC-VG. Instead, perform
frequency control with the pulse transmitter.
Times t1 (S) and t2 (S) in Figure 6.2.30 cannot be controlled by the inverter.
Pulse train input
[SYC]
[FWD]
t1 t2
Motor speed
Figure 6.2.30
6.2.5.3 Function codes
• Incorrect use of function code data may result in a hazardous state. Consequently, re-check data after finishing
setting and writing data.
Risk of accident
• Suddenly setting a high gain value with ASR (gain and integration time) function codes or otherwise failing to
write appropriate data may cause the motor to exhibit hunting behavior, causing damage to the motor and
device as well as bodily injury.
• Risk of bodily injury
• Changing data for function code o17 (F/F gain 1) may cause an overshoot if the speed changes abruptly. When
connecting the PG interface expansion card to devices that do not deal well with an overshoot, set this function
code to 0.0.
Risk of equipment damage
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