Control Techniques Unidrive User Manual

28 Unidrive SP Low Voltage DC Installation Guide
www.controltechniques.com Issue Number: 1
Figure 4-14 Soft start control circuit using drive internal logic
Table 4-6 Parameter set up required for Figure 4-14
The soft start control circuit provides the following functions:
• Opens and closes the external soft start relay contacts, which brings the external
soft start resistor in and out of circuit.
• Prevents the drive from running whilst the soft start resistor is in circuit (when in Low
Voltage DC mode only).
• Ensures that the drive DC bus has reached a voltage level in which the soft start
resistor can be taken out of circuit.
Figure 4-15 Logic function diagram
41
42
6.15
To drive +DC
F4
Rs
From LVDC
supply
PS2
Internal to drive External to drive
Drive
enable
x(-1)
10.16
6.44
2.5s
delay
x(-1)
x(-1)
Normal high voltage
supply = 0
Low voltage DC
supply = 1
Under voltage
active
Healthy = 0
UV trip = 1
Disable = 0
Enable = 1
0V
Parameter Default value Value to be entered
Pr 9.04 Function 1 input 1 source parameter 0.00 10.16
Pr 9.05 Function 1 input 1 invert OFF(0) ON(1)
Pr 9.06 Function 1 input 2 source parameter 0.00 6.44
Pr 9.09 Function-1 delay 0.0 1.5
Pr 8.27 Drive relay source 10.01 9.01
Pr 9.14 Function 2 input 1 source parameter 0.00 9.01
Pr 9.15 Function 2 input 1 invert OFF(0) ON(1)
Pr 9.16 Function 2 input 2 source parameter 0.00 6.44
Pr 9.17 Function 2 input 2 invert OFF(0) ON(1)
Pr 9.20 Function 2 destination parameter 0.00 6.15
Drive enable
Active supply Pr
6.44
Under voltage active Pr 10.16
Relay coil
Low voltage DC supply
Normal high voltage
UV trip
Drive Healthy
Contact closed
Contact open
Enable
Disable
2.5s

Control Techniques Unidrive Specifications

General

Brand	Control Techniques
Model	Unidrive
Category	Power Supply
Language	English