Siemens RAJA+ Installation, Operation & Maintenance Instructions Manual
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RAJA + Fully Automatic
Star Delta Controller
3TE7431
For dependable service, it is of utmost
importance that instructions given below are
followed for selection, inspection, installation,
commissioning, operation and maintenance.
RAJA + Fully Automatic Star Delta Controller
3TE7431
Selection of Controller
• Refer Table 1 for recommended selection of 3TE7 FASD
Controllers.
• 3TE7431 Controllers are available from 15HP/11kW to 30HP/
22kW suitable for Submersible pump application motors.
14
11
12
4
13
7
Fig. 1: FASD Controller
Fig. 2: FASD Controller inside view
Installation, Operation & Maintenance
Instructions
Please read and understand these instructions before
installing, operating or maintaining the equipment. Keep for
future reference.
Danger
Hazardous voltage can cause death or serious injury. Disconnect
power before working on equipment.
Warning
Automatic Motor Restart
LMRA has "Auto" mode selection. Use this function with
caution, Motor will restart automatically when healthy
power is restored back.
Reliable functioning of the equipment is only ensured with
certified components. Commissioning and maintenance by
qualified personnel only.
NOTICE
This product has been designed for environment A. Use of this product
in environment B may cause unwanted electromagnetic disturbances in
which case the user may require to take adequate mitigation measures.
Complies to standard : IS/IEC 60947-4-1
1. 'ON' push button (green)
2. 'OFF/RESET' push button (red)
3
3. Door knob
8
4. Metal Enclosure
9
5. Door
10
6. Mechanical Latch (OFF push button) to be used for
preventing undesired ON operation of Controller
7. Name plate
1
8. LED (amber) to indicate healthiness of incoming power
2
supply
6
9. Green LED to indicate Motor ON status
10. Rocker switch (Control ON/OFF)
5
11. Dual VA meter (For indication)
12. Phase Selector switch
13. Earthing screw
14. Controller Mounting bracket
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Summary of Contents for Siemens RAJA+
- Page 1 Installation, Operation & Maintenance Instructions RAJA + Fully Automatic Please read and understand these instructions before installing, operating or maintaining the equipment. Keep for future reference. Star Delta Controller Danger 3TE7431 Hazardous voltage can cause death or serious injury. Disconnect power before working on equipment. Warning For dependable service, it is of utmost Automatic Motor Restart importance that instructions given below are LMRA has “Auto” mode selection. Use this function with followed for selection, inspection, installation, caution, Motor will restart automatically when healthy commissioning, operation and maintenance.
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Page 2: Installation
– Measure the time taken by the motor to nearly phase current i.e. 0.58 times the rated current on the reach rated speed or steady state current condition motor name plate. (indicated when the motor reaches a steady hum). • If the relay trips even when set at rated motor current – Stop the motor by OFF button shown in fig. 1. the suitability of the controller / relay for the particular application should be checked with the nearest Siemens – Open the door & Set the timer to this measured value office. 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.) For Single Tank application... -
Page 3: Operation
Operation: • No maintenance is needed for overload relay. Please do not open the relay. • Ensure the door is locked. • Replace contacts of the contactor if they were severely • Rotate the Mechanical Latch away from OFF push button. pitted or when only 40% of the original contact tips • Switch On the rocker switch. remains. • Check the status of amber LED. Wait till amber LED is • Replacement of Overload Relay (Refer Fig. 4): continuously ON then only proceed. 1. Select a proper relay exactly as per the original. • Depending upon Selector switch knob position for phase 2. Slightly loosen the outgoing terminal screws of the selection, Indication of incoming power supply voltage relay. can be seen on Dual VA meter. 3. Disconnect the wires connected to the relay terminals. • For starting the motor, press Green push button marked ‘I’ (Fig. 1). 4. Slightly loosen the outgoing terminal screws of the line contactor • Line current of R phase is indicated by Dual VA meter. 5. Follow instructions given in Fig. 4 for removal of • Motor is ON when green LED is ON. - Page 4 Pump Rating Star Contactor Overload (Amp) for Starter MLFB Contactor range HRC Fuse At 415V MLFB Relay Motor / MLFB rating Siemens Incoming 3ph 50Hz MLFB Submersible Outgoing Make type From HP/ kW Pump To Motor 3NA7 – 500V Supply...
- Page 5 Table 2: Terminal torque values Torque Type Size Description Order No. (Nm) Terminal block 30A 0.8–1.4 Thermal Overload Relay 3US5600-2C8K Terminal block 60A 1.5–2.1 Thermal Overload Relay 3US5600-2D8K Dual VA Meter 30A – Current Thermal Overload Relay 3US5600-2Q8K terminals Coil for 200-400V 3TY7403-0AZ6 Dual VA Meter – Voltage Coil for 260-460V (Z8) 3TY7403-0AW415 terminals Coil for 260-460V (Z8) for 3TY7443-0AW415 Selector Switch 3LD4 3TS35 Multiway strips 0.4 to 0.6 1NO Contact Block 3SB5420-0B Dual VA Meter 60A – Current 1NC Contact Block 3SB5420-0C terminals Indicating light – Amber/Green...
- Page 6 For WLC sensors 41 60 Alternate mounting dimension 284x400 (Hole Ø7 mm) M5 earthing screw (2x) at bottom on both sides Fig. 6: Dimensional Drawing Disposal Siemens products are environment friendly, which PLASTICS: Segregate as per material type for recycling predominantly consist of recyclable materials. through authorized dealer. Because of the long lifetime of For disposals we recommend disassembling and separation Siemens Products the disposal guidelines may be replaced into following materials: by other national regulations when taking the product out of service. The local customer care service is available at any METALS: Segregate into Ferrous types for recycling through time to answer disposal-related questions. authorized dealer. Customer Care Toll free no. 1800 220 987 Email: ics.india@siemens.com Order No. A5E50798657000A/AA SACHIN ENTERPRISE Siemens Limited Product development is a continuous process. Consequently the data indicated in this Leaflet is subject to change without prior notice. For latest issue contact our sales offices.