INVT Goodrive350-19 Series User Manual

Goodrive350-19 series VFD Commissioning
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2. Master/slave speed synchronization
Master/slave speed synchronization is used for the speed synchronization between two motors.
Using the function requires that both motors have the encoder installed, and the VFD has the encoder
pulse counting function. The mechanical structure is shown in the following figure:
High-speed
brake
Fan
Lifting motor 1
Fan
Lifting motor 2
Low-speed
brake
High-speed
brake
Figure 5.12 Mechanical structure diagram 2
Since master/slave speed synchronization requires speed consistency, the VFD must use the
closed-loop mode. Therefore, only master/slave mode 4 in the CAN communication master/slave
mode can be used.
5.10.2 Terminal master/slave function
A. Using the VFD high-speed pulse input terminal HDIA and high-speed pulse output terminal
HDO to implement simplified master/slave control
The wiring diagram is as follows:
GD350-19 VFD
GD350-19 VFD
Master Slave
COM
COM
HDO
HDIA
1. Terminal master/slave mode a
The master adopts the speed control mode and sends the ramp frequency to the slave HDIA terminal
through the HDO terminal. The slave adopts the speed control mode and the frequency reference is
set by the HDIA terminal. Then, adjust reduction ratio of droop control P08.30 of the salve to meet

INVT Goodrive350-19 Series Specifications

General

Brand	INVT
Model	Goodrive350-19 Series
Category	DC Drives
Language	English