Advertisement
Installation:
• Open the door by rotating the door locks anticlockwise.
• Mount the starter on a vertical wall / plate free from
vibrations with proper nuts and bolts. Refer Fig. 10 for
mounting dimensions.
• Remove the rubber grommets for the incoming and
outgoing cable connections. (Refer Fig. 2).
• Connect incoming and outgoing cables as follows
(Refer Fig. 2):
- Use proper cable glands to ensure dust proofing. For
conduit entry use packed washers.
- Select correct size of cables from Table1.
- Connect line and motor cables exactly as per wiring
diagram pasted inside the cover of the starter.
- Terminate the incoming supply cables on terminal
block TB1 & outgoing cables to motor on terminal
block TB2, TB3 (Tightening torque - Refer table 2).
- This is Not applicable for FASD3, since all connections
are terminated on incoming & outgoing links.
NOTE: LMRA is set in Manual mode (Factory setting)
- Connect the earthing conductor to terminals marked
(earth) on the starter body with torque 1.2 to 1.6Nm.
The Starter is now ready for commissioning.
• Initially set the overload relay to 0.58 times the rated
motor current.
• Set the timer dial to the nearest value of starting time
available on motor name plate. If it is not available, then
set the dial to approximately 6-8 secs.
• Close the door by rotating the door locks clockwise.
Commissioning :
For exact setting of timer and overload relay, follow the
instruction given below:
Before switching ON recheck all external connections.
• Star-Delta Timer setting for FASD:
- First Switch ON the Rocker switch (Control On/Off).
- Start the motor by pressing the 'ON' button shown in
Fig. 1.
- Measure the time taken by the motor to nearly
reach rated speed or steady state current condition
(indicated when the motor reaches a steady hum).
Fig. 3: Timer Adjustment
2
- Stop the motor by OFF button shown in fig 1.
- Open the door & Set the timer to this measured value
by rotating the dial shown in Fig. 3.
• Overload relay setting:
- For closer protection set the overload relay to actual
phase current as measured by an ammeter. In the
absence of an ammeter, use the procedure given
below:
- Start the motor and let it run for 30 mins. Then
gradually reduce the relay settings till it trips. Set the
relay at a slightly higher value than this setting.
Overload relay characteristics (Refer service manual
A5E50797230A) can be used to estimate the average
tripping time at different multiples of set current.
- Allow a reset time of approx. 4 min. before pressing
the blue knob on the relay to reset it.
- Restart the motor after some time. If the relay does
not trip then consider it to be properly set. If the
relay trips, set at a little higher value than before and
recheck.
• Close the front door.
Caution
• During commissioning or maintenance always ensure
that the main supply is disconnected by switching off
the main switch & Rocker switch.
• In the case of FASD starters under no circumstances
should the relay be set higher than the phase
current i.e. 0.58 times the rated current on the motor
nameplate.
• If the relay trips even when set at rated motor current the
suitability of the starter/relay for the particular application
should be checked with the nearest Siemens office.
Operation:
• Ensure the door is locked.
• Rotate the Mechanical Latch away from OFF push button.
• Switch On the rocker switch.
• Check the status of amber LED. Wait till amber LED is
continuously ON then only proceed.
• Depending upon Selector switch knob position for phase
selection, Indication of incoming power supply voltage
can be seen on Dual VA meter.
• For starting the motor, press Green push button marked
Dial
'I' (Fig. 1).
• Line current of R phase is indicated by Dual VA meter.
• Motor is ON when green LED is ON.
• For stopping the motor press Red push button marked 'O'
(Fig. 1).
• For LMRA Auto / Bypass modes refer troubleshooting
guide A5E50797230A.
Reset Operation
– If the overload relay trips, Reset manually. (Allow a
reset time of approx. 4 min.)
Advertisement
