Product Overview
2.3 Control Structures
In parameter 1-00 Configuration Mode, select whether open-loop or closed-loop control applies.
2.3.1 Control Structure Open Loop
In the configuration shown in Illustration 2.13, parameter 1-00 Configuration Mode is set to [0] Open loop. The resulting
reference from the reference handling system or the local reference is received and fed through the ramp limitation and
speed limitation. After that, it is sent to the motor control. The output from the motor control is then limited by the
maximum frequency limit.
Reference
handling
Remote
reference
Remote
Auto mode
Hand mode
Local
Local
reference
scaled to
Hz
LCP Hand on,
o and auto
on keys
Illustration 2.13 Open-loop Structure
MG03M202
Design Guide
P 4-14
P 3-4* Ramp 1
Motor speed
P 3-5* Ramp 2
high limit [Hz]
Reference
P 4-12
Motor speed
low limit [Hz]
Danfoss A/S © 06/2016 All rights reserved.
100%
0%
Ramp
100%
-100%
2
To motor
control
P 4-10
P 4-19
Motor speed
Max output
direction
frequency
17
2