Delta MH300 Series - Page 516

Chapter 12 Description of Parameter Settings
MH300
12.1-11-11

11-37
Forward Speed Limit (Torque Mode)
Default: 10
Settings 0–120%

11-38
Reverse Speed Limit (Torque Mode)
Default: 10
Settings 0–120%
 Limits the speed for forward and reverse running in torque mode (Pr.01-00 maximum operation
frequency = 100%).
11-39
Zero Torque Command Mode Selection
Default: 0
Settings 0: Torque mode
1: Speed mode
 This parameter is only valid in TQCPG IM and TQCPG PM, and it defines the mode when the
speed limit is 0% or 0 Hz.
 When you set Pr.11-39 to 0, and speed limit is 0% or 0 Hz, the motor generates an excitation
current, and the torque command Pr.11-34 limits the torque.
 When you set Pr.11-39 to 1, and speed limit is 0% or 0 Hz, the AC motor drive can generate output
torque through the speed controller (the torque limit is Pr.06-12), and the control mode changes
from TQC + PG to FOC + PG mode. The motor has a holding torque. If the speed command is
not 0, the drive automatically changes it to 0.

11-40
Position Control Command Source
Default: 0
Settings 0: Input from internal register
2: Input from external pulse
3: RS-485
5: Communication card
11-41
PWM Mode Selection
Default: 2
Settings 0: Two-phase
2: Space vector
 Two-phase mode: effectively reduces the drive power components losses and provides better
performance in long wire applications.
 Space vector mode: effectively reduces the power loss and electromagnetic noise of the motor.

11-42
System Control Flag
Default: 0000
Settings 0000–FFFFh
bit No. Function
Description
0 Reserved
1
FWD / REV action
control
0: FWD / REV cannot be controlled by Pr.02-12 bit 0 & 1.
1: FWD / REV can be controlled by Pr.02-12 bit 0 & 1.