HMS A8NDPV1 Instruction Manual page 37

Get Started
Input the following ladder block to allow the inverter to enter "Ready For Switching On" sta-
tus, after connection is established, and initialization command is given (M0).
This initialization will result in setting bit 0 in ZSW1 (Ready To Switch On). It is now possible to
switch on the inverter, and start operation. To do this, enable bits 0 (ON/Off), 3 (enable oper-
ation), and 10 (Control By PLC) of STW1; while leaving bits 1 and 2 enabled.
At this moment it is also possible to set the desired rotation frequency. Assuming the motor
is rated for 50 Hz (inverter parameter 3) and a frequency of 10 Hz is requested, set 20% of the
rated motor speed to achieve this frequency. The value in Profidrive to allow full power is
16384, so setting 20% of this value (3276,8 round to 3277) will give the expected result. This
value shall be set in NSOLL_A.
Add the following ladder block to enable rotation command after initialization, and giving ro-
tation command (M1).
Finally add the code to stop the drive, when M1 is reset. In a new ladder block, check whether
the first 3 bits of ZSW1 are ON. This condition means that the drive is in operation mode. If this
condition is met, and M1 is not ON, reset the set point speed to zero, and set STW1 as 6.
A8NDPV1 PROFIBUS Option Board
GX Works2 (Q-CPU) Telegram 1 example
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