ABB PSE 18 User Manual

Softstarters Type PSE18...PSE370 Installation and commissioning manual 1SFC132057M020160 Chapter 7
7.5 Functions
This chapter describes all settings and functions possible in the PSE Softstarter,
as well as the easiest way of nding them. Respective default values, setting
ranges and parameter strings shown in the display are also stated.
7.5.1 Rated Current I
e
of motor
This parameter allows for conguring of the current that the softstarter will be
exposed to. Since the motor must be connected In Line, set the rated motor cur-
rent, which can be found on the motor rating plate.
Display Default value Setting range Description
Individual
(depending on size)
Individual
(depending on size)
See tables in
chapter 3.7.3 PSE
Softstarter types.
Setting range is 30-
100 percent of I
e
Rated motor current
I
e
Caution!
Connecting Softstarters PSE18...PSE370 Inside Delta will cause damage to
the equipment, and there is a risk of death or serious injury.
7.5.2 Start Ramp Time
The Start Ramp Time parameter allows for tuning of the time for the start ramp to
reach full voltage (Top of Ramp, TOR).
This parameter is controlling both voltage controlled and torque controlled start
ramps.
When a start signal is given the PSE Softstarter performs a start ramp by control-
ling the output voltage to the motor so that the voltage is increased linearly from
the initial voltage level to full voltage. Since the torque depends on both the volt-
age and the current, the torque curve does not always follow the voltage curve.
This has the effect that the torque curve will not increase linearly. If parameter
Torque Control Start is set to OFF, a voltage ramp will be performed during the
start ramp. The voltage and RPM of the motor will follow the graph in gure 7.5. If
a torque curve with linear increase is preferred, choose Torque Control during start
ramp described in chapter 7.5.6.
Display Default value Setting range Description
10 s 0-30 s Setting time for volt-
age controlled, and
torque controlled,
start ramps
The time set in Start Ramp Time is also the setting for the time in Torque Control
Start, if this parameter is enabled.
Figure 7.3: Rated Current parameter displayed
Figure 7.4: Start Ramp Time parameter
displayed
1SFC132160F0001
U
rpm
Figure 7.5: The function of Start Ramp Time

ABB PSE 18 Specifications

General

Brand	ABB
Model	PSE 18
Category	Controller
Language	English