8
Unidrive Regen Installation Guide
www.controltechniques.com
Issue Number: 2
4
Control circuit connections
All power circuit connections should be made as shown in Chapter 3 Power connections on page 4.
4.1
Digital / Analog I/O set-up in Regen mode
The following table lists the default functions of the analog and digital I/O on a Regen drive. The terminals which are listed as “Fixed” have dedicated
functions for Regen operation. They must be connected to perform their allocated function and cannot be re-programmed.
Table 4-1
Functions of the analog and digital I/O
* Pr 8.25 must be set by the user. See Table 4-2.
Figure 4-1 shows typical control connections for a Regen and motoring drive. In this example the motoring drive is configured for 4-20mA Speed /
Torque reference and sequencing Mode 4 with Run Forward and Run Reverse inputs.
N
All control connections for the Regen drive must be made as shown in Figure 4-1.
The Regen drive healthy signal can be taken from digital output 3 on terminal 26 (if the Regen drive is disabled, trips, or detects that the mains supply
is lost this output then becomes inactive).
Table 4-2
Configuration of drive relay
N
Unidrive Regen has been designed to operate in negative logic as default. In order for the drive to be configured to operate in positive logic alterations
must be made to the control connections and parameter settings (contact C.T. Technical Support for this information).
Terminal No.
Terminal
Description
Fixed or
Programmable
Function in Regen Mode
1
Drive relay
Fixed
Output - close auxiliary contactor*
2
Drive relay
Fixed
Output - close auxiliary contactor*
5
Analog input 1
User-programmable
7
Analog input 2
User-programmable
8
Analog input 3
User-programmable
9
Analog output 1
User-programmable
Output - Supply current
10
Analog output 2
User-programmable
Output - Supply power
24
Digital output 1
Fixed
Not used
25
Digital output 2
Fixed
Output - Enable other drive
26
Digital output 3
User-programmable
Drive healthy
27
Digital input 1
User-programmable
Input - Reset
28
Digital input 2
Fixed
Input - Main contactor closed
29
Digital input 3
User-programmable
30
Enable
Fixed
Enable
Parameter
Description
Drive
Pr 8.25 - Relay
Source
The Regen drives relay on terminal 1 and 2 has to be
configured to close the auxiliary contactor on power up and
remove the softstart circuit. Set Pr 8.25 to Pr 15.14
Regen drive
NOTE
NOTE
