Siemens Raja+ 3TE7431-2BC24-1A Series Betriebsanleitung

Installation, Maintenance

& Troubleshooting Guide

For RAJA

Agriculture Starters

& Controllers

Contents:

5. Fully Automatic Star Delta Controller with WLC:

5.1 Product description

5.2 Wiring diagram

5.3 Technical Details

5.4 Installation

5.5 Operating procedure in normal condition

5.6 Troubleshooting guidelines in case any incoming fault is

present before switching ON the motor

5.7 Troubleshooting guidelines in fault condition when motor stops

while it is in running condition

5.8 Troubleshooting guidelines in case any fault is at the load side

Fig:12 FASD Controller

Installation, Maintenance & Troubleshooting guide | Version 05

Fully Automatic Star Delta

Controller with WLC

5.1: Product description

1. ‘ON’ push button (green)

2. ‘OFF/RESET’ push button (red)

3. Door knob

4. Metal Enclosure

5. Door

6. Mechanical Latch (OFF push button) to be used for preventing undesired ON operation of Controller

7. Name plate

8. LED (amber) to indicate availability and healthiness of incoming power supply

9. Green LED to indicate Motor ON status

10. Rocker switch (Control ON/OFF)

11. Dual VA meter (For indication)

12. Phase Selector switch

13. Earthing screw

14. Controller Mounting bracket

Installation, Maintenance & Troubleshooting guide | Version 05

1: Amber LED

2: Green LED

3: Rocker Switch

4: AV meter

5: Phase Selector switch

6: ON push button

7: OFF push button

8: WLC operating modes

9: Starter Operating Modes

10: Line monitoring relay

11: Water Level Controller

12: Contactor

13: Thermal Overload Relay

14: Terminal Block TB3

Inside view of Fully Automatic Star Delta Controller with WLC

Fig:13

Installation, Maintenance & Troubleshooting guide | Version 05

5.2: Wiring Diagram: FASD controller with WLC

5.21 Control logic diagram

Installation, Maintenance & Troubleshooting guide | Version 05

5.22 Power circuit diagram

Technical data:

Terminal connections:

Product Water level controller relay

Control Voltage 415V AC

Frequency 50-60Hz

Operating modes Single tank operation (Delivery or Suction mode)

Dual tank operation (Delivery & Suction mode)

Trip time delay 2sec (+/-0.5sec)

Water Level controller relay:

WLCA is used in the DOL Controllers for the regulation of water level in the tank.

P1:

P2:

P3:

P4:

P5:

P6:

Sensors

A1:

A2: Coil supply 17:

18: NO contact

Installation, Maintenance & Troubleshooting guide | Version 05

Table: 25 Technical details-FASD Controller with WLC

Note: xx: Coil voltage; Z6:200-400 V AC; Z8: 260-460V AC

yy: Coil voltage; FE:200-400V AC; FF: 260-460V AC

*Type 1 coordination as per IS/IEC 60947-4-1 Standard.

5.3: Technical details

Type (HP /

kW)

IL/

Iph

(A)

Line &

Delta

Contactor

Type

Star

contactor

Type

Overload

Relay

Range

(A)

Line

Monitoring

Relay^

Nominal

HRC fuses

rating

Type 3NA7

500V*

Max.

Recommended

Cu cable size

(sq:mm)

Incoming /

outgoing

3TE7431-2BC24-1Axxγ 15/11 29 / 16.7 3TS33 3TS31 3UW5202-2B 12.5-20 7UG0613-0yy20 32A 6.0/2.5

3TE7431- 2CC25-1Axx 17.5/13 34 / 19.6 3TS35 3TS33 3US5600-2C8K 16-25 7UG0613-0yy20 50A 10/2.5

3TE7431-2DC26-1Axx 20/15 39 / 22.5 3TS35 3TS33 3US5600-2D8K 20-32 7UG0613-0yy20 63A 10/4.0

3TE7431-2DC27-1Axx 25/18.5 48 / 27.7 3TS35 3TS34 3US5600-2D8K 20-32 7UG0613-0yy20 63A 10/6.0

3TE7431-2RC28-1Axx 30/22 57 / 32.9 3TS35 3TS34 3US5600-2R8K 32-40 7UG0613-0yy20 80A 16/10

Diagrammatic representation of the 3x modes of WLCA:

Delivery mode

P1 P2 P3

Suction mode

P1 P2 P3

Dual Tank mode

P1 P2 P3P1 P2 P3

Fig.11

For Delivery mode to become operational: P2, P3 Sensor should be out of water

For Suction mode to become operational: P1, P2, P3 Sensor should be inside water

For Dual tank mode to become operational: P1,P2, P3 Sensor should be inside water & P5, P6 out of water

Installation, Maintenance & Troubleshooting guide | Version 05

5.4: Installation

• Open the door by rotating the door lock anticlockwise.

• Mount the starter on a vertical wall/ plate free from vibrations with proper nuts and bolts.

Refer operating instruction for mounting dimensions.

• Remove the rubber grommets for the incoming and outgoing cable connections. (Refer Fig. 13)

• Connect incoming and outgoing cables as follows (Refer Fig. 13):

- Use proper cable glands to ensure dust prooﬁng. For conduit entry use packed washers.

- Select correct size of cables from Table 25

- Connect line and motor leads 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 25B)

NOTE: LMRA is set in Manual mode (Factory setting)

WLCA is set in Delivery 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 nameplate

• If it is not available, then set the dial to approximately 6-8secs.

Installation, Maintenance & Troubleshooting guide | Version 05

•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 shown in Fig. 6 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.

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.

- Start the motor by pressing the ‘ON’ button shown in Fig. 12

- 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. Set the timer to this measured value by rotating the

dial shown in Fig. 13A.

Fig. 13A: Timer Adjustment

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