Start-up Procedure
32
32
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Start-up procedure with start-stop buttons
(Use COMMISSIONING AND
OPERATION MANUAL)
1.
Connect Control Supply.
On
and
Stop
LED will light on.
2.
Review all parameters with
Mode
and
Select
keys.
Set parameters as required.
3.
If necessary, return to Default
Parameters (see “Service Mode” page
31).
4.
Connect main voltage to starter line
terminals.
5.
Set LCD to show “MOTOR FLA” (% of
motor FLA).
6.
Press Start. If motor starts to turn shortly
after start signal, proceed to paragraph 7.
If not, increase “Initial Voltage” setting
and start again.
If initial inrush current and mechanical
shocks during starting are too high, decrease
“Initial Voltage” settings and proceed to
paragraph 7.
7.
Motor begins to turn. If speed accelerates
smoothly to nominal, proceed to Para 8.
If current during acceleration is too high,
decrease “Current Limit” setting and
proceed to Para 8. If motor speed does
not accelerate to nominal, increase
Current Limit setting.
8.
Press Stop and wait until motor stops.
9.
Slightly increase Initial Voltage and
Current Limit settings to allow for load
changes.
10.
Press Start and see that the motor
acceleration time to full speed is as
required.
11.
If acceleration time is too short, increase
“Acceleration Time” setting.
12.
Check total starting time and set Max.
Start Time to approximately 5 seconds
longer than the maximum time required
to complete starting process.
Examples of starting curves
Light Loads-Pumps, Fans, etc.
Initial Voltage (IV) – set to 30% (Factory Default)
Current Limit (CL) – set 300%
Acceleration Time (AT) – set 5 sec.
U%
100%
5
t
I%
600%
100%
50%
30%
10%
400%
300%
t
The voltage quickly increases to the Initial Voltage value
and then gradually ramps-up to nominal. The current
simultaneously and smoothly increases to reach Current
Limit setting or less, before smoothly decreasing to the
operating current. Motor speed will accelerate to full speed
quickly and smoothly.
High Inertia Loads – Fans, Centrifuges, etc
Initial Voltage – set 50%
Current limit – set 400%
Acceleration time – set 20 sec
U%
100%
20
t
I%
600%
100%
50%
10%
400%
t
Voltage and current increase until current reaches “Current
Limit”. The voltage is held at this value until motor is close
to nominal speed, then current will begin to decrease. The
HRVS-DN continues to ramp-up the voltage until reaching
nominal. Motor speed smoothly accelerates to full speed.
Special starting – Using Dual Adjustment
Using two starting characteristics, the
starter will accelerate to DA-IV
reaching 100% current limit. After tx
(Imm. Relay delay) voltage to
terminal 8 is switched off, using the
standard characteristic to complete
acceleration. Useful to prevent initial
high acceleration in applications such
as submersible pumps, drum fans
with resonating frequency, etc.
U%
100
t
2
t
25
10
t
1
Dual Adjust Para.
Standard Para.
Initial Voltage
10%
25%
Acceleration Time
Tl = 2-30 sec
T2 = 2-30 sec
Current Limit
200%
300-400%
Imm.Rel. ON delay
Tx = 1-60 sec.
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