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TROUBLE SHOOTING 

TMS7 SERIES 

ME00070B 

31 

Symptom

 

Cause

 

Erratic motor 

operation and 
tripping.

 

SCRs not latching.

 SCRs require a 

minimum current flow to ‘latch’ on. In 
situations where very small motors are 

being controlled by  large soft starters the 
current drawn may be insufficient to latch on 

the SCRs. Increase motor size or reduce 
soft start size.

 

Soft stop ends 

before the 
programmed ramp 

time.

 

Motor will not stall.

 The TMS7 has 

significantly reduced the voltage applied to 
the motor without detecting a reduction in 

motor speed. This indicates that with 
present motor loading further control of the 

voltage will be ineffectual, hence the soft 
stop function has halted.

 

TMS7 display 

shows a ‘h’

 

The START button on the local control 

panel is stuck

. Release the button to 

restore normal operation.

 

TMS7 will not enter 

the programming 
mode.

 

The TMS7 is running.

 The TMS7 must be 

stopped before programming mode can be 
accessed. 

No, or incorrect control voltage. 

Ensure 

the correct control voltage is applied to the 
inputs A1, A2, A3. 

 

9.4  Tests & Measurements

 

 

Test

 

Procedure

 

Run performance 

test.

 

This test verifies correct operation of the 

TMS7 during run. 
1.  Measure the voltage drop across each 

phase of the TMS7 (L1–T1, L2–T2, 

L3–T3). The voltage drop will be less 
than approximately 2 VAC when the 

TMS7 is operating correctly.

 

Control input test

 

This test verifies circuits connected to the 

TMS7 remote control inputs. (Start, Stop, 
Reset & FLC Select) 
1.  Measure the voltage across each 

input. With the remote circuit closed 
there should be 0VDC measured. If 

24VDC is measured the switch/control 
is incorrectly connected or faulty.

 

Start performance 

test.

 

This test verifies correct operation of the 

TMS7 during start. 
1.  Determine the expected start current 

by multiplying the settings made in 
Function 1. 

Motor Full Load Current

 

and Function 2. 

Current Limit

2.  Start the motor and measure the 

actual start current. 

3.  If the expected start current and the 

actual start current are the same, the 
TMS7 is performing correctly. 

Power circuit test.

 

This test verifies the TMS7 power circuit 

including the SCR, firing loom and control 

module. 
1.  Remove the incoming supply from the 

TMS7 (L1, L2, L3 and control supply). 

Test

 

Procedure

 

2.  Remove the motor cables from the 

output terminals of the TMS7 (T1, T2 

& T3). 

3.  Use a 500 VDC insulation tester to 

measure the resistance between the 

input and output of each phase of the 
TMS7 (L1-T1, L2-T2, L3-T3). Note that 

low voltage ohm meters or multi-
meters are not adequate for this 

measurement. 

4.  The measured resistance should be 

close to 33k

 and approximately 

equal on all three phases

.

 

5.  If a resistance of less than about 

10k

 is measured across the SCR, 

the SCR should be replaced. 

6.  If a resistance greater than about 

60k

 is measured across the SCR 

there could be a fault with the TMS7 
control module or firing loom.

 

 

Содержание ME00070B

Страница 1: ... 11 5 4 6 Wire connection 11 5 5 6 Wire connection Bypass operation 11 5 6 Power factor correction 11 5 7 Line contactors 12 6 Control Circuits 6 1 Electrical Schematic 13 6 2 Control Supply 13 6 3 Control Wiring 13 6 4 RS485 Serial Communication 14 7 Programming Operation 7 1 Programming Procedure 17 7 2 Function List 18 7 3 Function Descriptions 18 7 4 Operation 24 8 Application Examples 8 1 Ins...

Страница 2: ...OR M F1 Semiconductor Fuses Legend C24 model s L2B L3B L1B E T2 L1 L2 L3 T1 T3 A1 A2 A3 3 PHASE SUPPLY 230V 10 15 15 10 400V C45 models 575V 10 15 15 10 460V OPTIONAL F1 2 Programming Basic application requires only that the TMS7 be programmed with the connected motor s nameplate full load current FLC To program the TMS7 with the motor s FLC do the following 1 Put the TMS7 into program mode by sim...

Страница 3: ...he control inputs are suitable for low voltage low current switching ie gold flash or similar Ensure cables to the control inputs are segregated from AC power and control wiring Entry of metal swarf into the cabinet can cause equipment failure Do not connect Power Factor Correction capacitors to the output of the TMS7 If static power factor correction is employed it must be connected to the supply...

Страница 4: ...Up Down Store LED parameter display Phase indicator LEDs Power connection 3 Wire 6 Wire Bypass connections to retain motor protection even when bypassed 17 Amps to 1562 Amps 3 Wire 26 Amps to 2345 Amps 6 Wire 200VAC to 525VAC V5 models 200VAC to 690VAC V7 models Sundry features IP42 253 Amps IP00 302 Amps Current read out Motor temperature read out Fault History eight position Multiple function se...

Страница 5: ... 775 710 606 502 TMS7 4500 897 831 706 578 TMS7 4600 1134 989 872 759 TMS7 4700 1385 1210 1066 921 TMS7 4800 1563 1366 1202 1030 Continuous Operation Not Bypassed 6 Wire Connection Start Current FLC 300 350 400 450 AC53a 3 10 70 10 45 o C 1000 metres AC53a 3 5 15 70 10 45 o C 1000 metres AC53a 4 20 70 10 45 o C 1000 metres AC53a 4 5 30 70 10 45 o C 1000 metres TMS7 4007 26 23 21 18 TMS7 4015 50 44...

Страница 6: ...7 4500 897 897 798 632 TMS7 4600 1153 1153 1006 850 TMS7 4700 1403 1403 1275 1060 TMS7 4800 1574 1574 1474 1207 Bypassed Operation 6 Wire Connection Start Current FLC 300 350 400 450 AC53b 3 10 350 45 o C 1000 metres AC53b 3 5 15 345 45 o C 1000 metres AC53b 4 20 340 45 o C 1000 metres AC53b 4 5 30 330 45 o C 1000 metres TMS7 4007 27 27 24 20 TMS7 4015 51 51 51 42 TMS7 4018 62 62 62 52 TMS7 4022 7...

Страница 7: ... TMS7 4185 500FMM 500FMM 500FMM 500FMM 320 000 TMS7 4220 700FMM 700FMM 700FMM 700FMM 781 000 TMS7 4250 500FMM 500FMM 500FMM 500FMM 1 200 000 TMS7 4315 500FMM 500FMM 500FMM 500FMM 1 200 000 TMS7 4400 700FMM 700FMM 700FMM 700FMM 2 532 000 TMS7 4500 4 500 000 TMS7 4600 4 500 000 TMS7 4700 6 480 000 TMS7 4800 12 500 000 Supply Voltage 170M Series Fuses 415VAC 525VAC 575VAC 695VAC Starter I2t TMS7 4007...

Страница 8: ... Run Output R34 R33 NormallyOpen 5A 250VAC 360VA 5A 30VDC resistive Prog Output A R44 R43 NormallyOpen 5A 250VAC 360VA 5A 30VDC resistive Prog Output B R24 R23 Normally Open 5A 250VAC 360VA 5A 30VDC resistive ProgOutputC R14 R12 R11 Changeover 5A 250VAC 360VA 5A 30VDCresistive Analogue Output C6 C7 4 20mA Sundry EnclosureRatingTMS7 4007 4132 IP42 NEMA 1 EnclosureRatingTMS7 4150 4800 IP00 OpenChass...

Страница 9: ...e that foreign matter does not contaminate the jointing compound and become trapped between the bus bar and its mounting plate If the paste does become contaminated clean and replace with a jointing compound suitable for aluminium to aluminium or aluminium to copper joints 4 3 Mounting Instructions Models TMS7 4007 4132 can be wall mounted or installed inside another enclosure These models can be ...

Страница 10: ...sources are installed in an enclosure along with the TMS7 an additional air flow allowance must be made for these items Note that heat generation from semiconductor fuses if used can be eliminated by installing these within the bypass loop Required Airflow m3 min m3 hour Motor Amps Heat watts 5oC Rise 10oC Rise 5oC Rise 10oC Rise 10 45 0 5 0 2 30 15 20 90 0 9 0 5 54 27 30 135 1 4 0 7 84 42 40 180 ...

Страница 11: ...2 Connect the three OUTPUT terminals T1 T2 T3 of the TMS7 to the motor windings ensuring that the connections are made to one end of each winding only It is imperative to connect the output of the TMS7 to the same end of each winding and this is usually marked on the motor terminations L1 L2 L3 T1 T2 T3 MOTOR TERMINALS 6 WIRE CONNECTION The six terminations to the motor windings are usually arrang...

Страница 12: ...ine contactor via the Main Contactor Control output As an alternative to a line contactor either a circuit breaker with a no volt release coil operated by the TMS7 trip output or a motor operated circuit breaker can be considered If a motor operated circuit breaker is used as a line contactor the potential delay between the breaker being told to close and phase power being applied to the TMS7 coul...

Страница 13: ...030 TMS7 4110 TMS7 4132 TMS7 4800 110 230 VAC 995 00829 00 995 00831 00 995 00832 00 6 3 Control Wiring TMS7 operation can be controlled using either the local push buttons remote control inputs or the serial communications link The LOCAL REMOTE push button can be used to switch between local and remote control Refer to Function 20 Local Remote Operation for details Remote ControlInputs The TMS7 h...

Страница 14: ...0mm away from communications cabling Where this cannot be avoided magnetic shielding should be provided to reduce induced common mode voltages Data transmitted to and from the TMS7 must be in 8 bit ASCII no parity 1 stop bit Baud rate is set by Function 61 RS485 Baud Rate The TMS7 can be programmed to trip if the RS485 link fails by setting Function 60 RS485 Timeout The starter address is assigned...

Страница 15: ...ved 2 Motor Thermal model trip 3 Motor thermistor 4 Current imbalance trip 5 Supply frequency trip Status Read ASCII Comment 6 Phase rotation trip 7 Stall trip 8 Power circuit fault 9 Undercurrent trip 10 Starter heatsink overtemperature 11 Invalid motor connection Data Read ASCII Comment Current D10 Requests motor current The data is 4 byte decimal ASCII Minimum value 0000 Maximum value 9999 Amps...

Страница 16: ...ction Comment Status 7 50 Hz Only one of either Status 7 or Status 6 can be at logic 1 when the TMS7 is operating Status 6 60 Hz Status 5 Unallocated Status 4 Soft stop Status 3 Positive phase rotation Will be at logic 0 when there is a negative phase rotation Status 2 Unallocated Status 1 Unallocated Status 0 Unallocated Status_1 bits negative logic 0 true StatusBit Function Comment NOT Status_1 ...

Страница 17: ...play changes to show the function set point currently stored in memory Function values are right justified and do not blink Step 3 Alter the function set point 1 Review the current function set point and if necessary use the UP or DOWN keys to adjust the setting Pressing the FUNCTION key will restore the original setting Step 4 Store the new function set point 1 Press the STORE key to store the di...

Страница 18: ...s 10 86 Current imbalance sensitivity 5 87 Undercurrent protection 20 88 Stall protection 400 Protection Delays 90 Current imbalance trip delay 3 Read Only Data 100 Model Number 101 Fault History Restricted Functions 110 Access code 0 111 Update access code 0 112 Function lock 0 113 Restore function settings 0 7 3 Function Descriptions 1 Motor Full Load Current Range Model Dependant Amps DefaultSe...

Страница 19: ...tection is used Description Sets the motor thermal capacity used by the TMS7 motor thermal model Adjustment Set the Motor Trip Class MTC according to the motor s thermal capacity A motor s thermal capacity is expressed as the maximum time seconds a motor can maintain locked rotor current conditions from cold and is often referred to as Maximum Locked Rotor Time or Maximum DOL Start Time This infor...

Страница 20: ... provide optimum control for most applications Pump control may however offer superior performance in some applications and can be of particular benefit in some pumping applications 20 Local Remote Operation Range 0 3 0 TMS7 Local Remote push button always enabled 1 TMS7 Local Remote push button disabled while motor running 2 Local control only TMS7 push buttons enabled remote inputs disabled 3 Re...

Страница 21: ...of a motor current in excess of the programmed value 42 Motor Temperature Alarm Range 0 105 Motor Temperature DefaultSetting 80 Description Sets the temperature at which the motor overtemperature alarm operates Adjustment The motor overtemperature alarm can be assigned to the Programmable Relay Outputs A B or C for indication of a motor temperature as calculated by the Motor Thermal Model in exces...

Страница 22: ...m number of reset attempts for the Auto reset function Adjustment The Auto reset counter increases by one after each trip up to the maximum number of resets set in Function 71 Auto Reset Number Of Resets The fault is then latched and a manual reset is required The Auto reset counter decreases by one to a minimum of zero after each successful start stop cycle Refer Function 70 Auto Reset Configurat...

Страница 23: ...nds DefaultSetting 3 Seconds Description Sets the delay period between detection of a phase imbalance greater than allowed by the setting made in Function 7 86 Current Imbalance Sensitivity and a trip condition Adjustment Set as required 100 Model Number Range 1 22 DefaultSetting Model Dependant Description A diagnostic parameter used to identify the power assembly type 101 Fault History Range n a...

Страница 24: ...displayed In the event of a trip state the relevant trip code will be shown If motor current exceeds the maximum current able to be shown on the numeric display the display will show dashes 2 Starter Status LEDs Start Voltage is being applied to the motor terminals Run Full voltage is being applied to the motor terminals Trip The TMS7 has tripped Remote The TMS7 is in remote control mode 3 Operati...

Страница 25: ... push button to switch between local and remote modes Refer to section 6 3 Control Wiring for further detail Restart delay Function 31 Restart Delay sets the delay period between the end of a stop and the beginning of the next start During the restart delay period the LEDs to the right of the numeric display will flash indicating that a restart cannot yet be attempted Pre start tests Before applyi...

Страница 26: ... RELAY OUTPUT A terminals R44 R43 The control supply must be sourced from before the contactor FunctionSettings Function 21 Relay Output A Functionality 11 Assigns the Main Contactor function to Relay Output A 8 2 Installation With Bypass Contactor K1M OR OR S1 Reset Pushbutton L egend S2 Stop Pushbutton S3 Start Pushbutton K1M Bypass Co ntactor F1 Semiconductor Fuses optional I43 I44 I33 I34 S3 I...

Страница 27: ...g torque than is available from the D C Brake feature the TMS7 can be configured for Soft Braking In this application the TMS7 is employed with forward run and braking contactors On receipt of a start signal pushbutton S1 the TMS7 closes the forward run contactor K1M and controls the motor according to the programmed Primary Motor Settings On receipt of a stop signal pushbutton S2 the TMS7 opens t...

Страница 28: ...PPLY CONTROL SUPPLY FLC SELECT K1A I44 I43 START K1M RESET STOP K2M S1 I22 I21 I12 I11 Description The TMS7 can be configured for control of dual speed Dahlander type motors In this application the TMS7 is employed with a High Speed contactor K1M Low Speed contactor K2M and a Star contactor K3M On receipt of a High Speed start signal the High Speed contactor K1M and Star contactor K3M are closed T...

Страница 29: ... connected to the TMS7 input This will be seen as a 0Hz situation and may the cause of a supply frequency trip 6 Phase rotation trip The TMS7 has detected a phase rotation that has been prohibited by the setting made in Function 30 Phase Rotation Protection 1 Change the incoming phase rotation 7 Stall trip The TMS7 has measured a current equal to the limit set in Function 9 Stall Protection 1 Iden...

Страница 30: ...o the SCRs so they should be checked by using the SCR test described in section 9 4 Tests and Measurements Damaged SCRS Verify soft starter operation using the SCR test described in section 9 4 Tests and Measurements Damaged firing circuit Verify the TMS7 SCR firing circuit using the Power Circuit Test described in section 9 4 Tests and Measurements TMS7 will not operate Local push buttons not act...

Страница 31: ...ly Control input test This test verifies circuits connected to the TMS7 remote control inputs Start Stop Reset FLC Select 1 Measure the voltage across each input With the remote circuit closed there should be 0VDC measured If 24VDC is measured the switch control is incorrectly connected or faulty Start performance test This test verifies correct operation of the TMS7 during start 1 Determine the e...

Страница 32: ... the remaining sections of the utilisation code StartCurrent The maximum available start current given the parameters detailed in the remaining sections of the utilisation code Start Time The maximum available start time given the parameters detailed in the remaining sections of the utilisation code On load Duty Cycle The maximum permissible percentage of each operating cycle that the soft starter...

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