Installation - Siemens RAJA+ Installation, Operation & Maintenance Instructions Manual

Installation:

• Open the door by rotating the door locks anticlockwise.
• Mount the controller on a vertical wall / plate free from
vibrations with proper nuts and bolts. Refer Fig. 6 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 Table 1.
– Connect line and motor cables exactly as per wiring
diagram pasted inside the cover of the controller.
– Terminate the incoming supply cables on terminal
block TB1 & outgoing cables to motor on terminal
block TB2, TB3 (Tightening torque - Refer table 2).
NOTE: LMRA is set in Manual mode (Factory setting)
WLC is set in Delivery mode (Factory setting)
– Connect the earthing conductor to terminals marked
(earth) on the controller body with torque 1.2 to
1.6Nm.
The Controller 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
6-8secs.
• 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 Controller:
– 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).
– 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.
Procedure for connecting WLC sensors & terminations:
• These sensors need to be routed from left side of Base plate through cable gland (Please ensure due care to avoid
damage to the sensors.)
Mode
Connection Procedure
2
For Single Tank application
(Delivery or Suction mode)
Connect sensors P1, P2 & P3
to Terminal X1, X2, X3 of
Terminal block TB5
Fig. 3 Timer Adjustment
• 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 controllers under no
circumstances should the relay be set higher than the
phase current i.e. 0.58 times the rated current on the
motor name plate.
• If the relay trips even when set at rated motor current
the suitability of the controller / relay for the particular
application should be checked with the nearest Siemens
office.
For Dual Tank application
(Dual tank mode)
Connect sensors P1, P2 &
P3 to Terminal X1, X2, X3 of
Terminal block TB5 & sensors
P4, P5 & P6 to Terminal X4,
X5, X6 of Terminal block TB5
Dial
For by passing WLC
Remove connection between
X7-X8 of Terminal block TB5.
Remove connection from X11
of TB5 & Connect it to X12 of
TB5.