5
Instructional Leafl et
IL03901001E
Effective June 2009
DS6 series soft start controllers
EATON CORPORATION
www.eaton.com
24 Vdc power supply requirements
The 24 Vdc power supply for your DS6 soft start controller must
meet or exceed the following requirements:
•
Minimum steady-state current: 1W (35 mA)
•
Minimum start command current: 2W (65 mA)
•
Minimum bypass contactor inrush current: 600 mA for 50 ms
•
Voltage stability: 24 Vdc +10%/–15%
Operations
•
24 Vdc control voltage is applied to te24
•
The status light will illuminate after the starter has completed
initialization, closing contacts 23/24, and indicating READY status
•
Line voltage is applied to the starter by closing the
mains contactor
•
The soft start controller issues a START command by applying
+24 Vdc to terminals EN and +A1. Contacts 13 and 14 will close
when the end of the ramp time is reached
ote:
N
Bypass contactors close at the end of ramp time + ~0.18 seconds.
It is important to correctly set the ramp time, so the bypass contactors will
close within 5 seconds after the motor has achieved rated RPM.
•
To initiate a STOP command, 24 Vdc from terminal EN
and +A1 or EN
•
To initiate a RAMP STOP command, 24 Vdc from
teA1
Adjusting the soft start controller parameters
There are three adjustments to the DS6 soft start controller:
•
t-Start = ramp time
•
u-Start = initial voltage (torque)
•
t-Stop = stop ramp time
ote:
N
In all cases, motor rotation should begin within 2–3 seconds after the
START command is sent to the soft start controller.
Figure 6. DS6 Ramp Functions
u-Start
U
t-Start
t-Stop
t
t-Stop = 0
13 14
TOR
(Top of Ramp)
