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Toshiba S2E21 Instruction Manual
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Toshiba S2E21 Instruction Manual

Toshiba S2E21 Instruction Manual

Motor protection relay
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Summary of Contents for Toshiba S2E21

  • Page 2 APPENDIX A ............121 Rev 1 TYPE S2E21-ClAU VERSION 1.01...
  • Page 3 TOSHIBA 0 (0) NON- F A I L - S A F E 29-3 --) TRIP A L A R M 0 LOCK State at Description Item Sets the operation mode of the output relay. Setting Energized-on The output relay is energized on operation.
  • Page 4 TOSHIBA State at Description de I ivery Continuously The output relay is energized at normal condi- tion. The state of output contact is shown below energized in the case of tripping. (fai Isafe) Open Closed p r o v i d e d...
  • Page 5 TOSHIBA R Y O / P S E L . I N S T S P A R E 1 S P A R E 2 Description Item jetting Sets the operation condition for the output relay. Selects a unit that drives the alarm output relay when an alarm is detected.
  • Page 6 TOSHIBA State at Description Specifies a unit that drives the trip output 30-3 Trip relay when a trip is detected. Others: Enter either “0” (not operate) or “1” (operate). The output is an ORed output of trip detections from the unit that drives the trip output...
  • Page 7 TOSHIBA P 3 1 S E T T I N G 31-1 --t 31-2 ‘+ 1 O=RTD4 State at I tern Description delivery Setting Selects an analog transducer output. 31-1 31-2 Selects a measuring unit that outputs data to the analog transducer.
  • Page 8 TOSHIBA 32-2 + R T D 7 R T D 8 10062 State at delivery Sets the kind of RTD. Kind of RTD RTDl to RTD8: Selects the corresponding RTD type. Different RTD types can be selected on one relay.
  • Page 9 Trip level Setting range: 0 - 200 "c Reset level Sets a reset temperature for each RTD. 100 'c 33-4 After the temperature goes below the reset level. the S2E21 can then be reset. Setting range: 0 - 200 C...
  • Page 10 TOSHIBA P 3 4 S E T T I N G 34-1 + * A U T O L E A R N I N G * 1 s t 34-3 --t T s t 34-4 + State at I tern...
  • Page 11 TOSHIBA State at Description Item delivery Automatically detects the starting time and starting 34-3 specifies whether or not the detected starting time time is used as the setting value. Enter either 0 (OFF) or 1 (ON). When 0 (OFF) is entered, the starting time is displayed (P4) but the input setting value;...
  • Page 12 TOSHIBA State at Description de 1 i very Cooling time Automatically detects the cooling time constant 14-5 and specifies whether or not the detected value constant is taken as the cooling time constant setting. constant is automatically detected and the detected value is taken as the setting value.
  • Page 13 TOSHIBA P 3 5 S E T T I N G Clear data (1 : A L L 5 : T t r u n 7 : LEARNED TD 8 : MAX STARTS) Description : tern Clears accumulated data and held data.
  • Page 14 TOSHIBA 5.9 Testing M-1 + RESET S P A R E 1 S P A R E 2 ( 4 - 2 OmA) 1 tern Description Testing Perform tests on the input/output circuit. Input Displays the state of contact input from the terminal block.
  • Page 15 TOSHIBA State at Description delivery Changes the outpit of the analog transduser. Press [EXE1 key. The cursor appears, and enter a current value (4-20 mA) to be output from the analog transducer. The output current is checked externally.
  • Page 16 TOSHIBA 5.10 Failure Information T R I P 50-l 50-3 6 0 . 0 State at Item Description Displays information at the date and time of the Trip 50-l information latest current-associated trip. Cause of trip is displayed. Time Dispiayes the date and time at which the trip 50-2 occurred.
  • Page 17 TOSHIBA T R I P P 5 1 RTD 1 R T D 4 RTD7 R T D 8 State at Description delivery Displays information at the date and.time of the latest trip. RTD number. that has tripped is displayed.
  • Page 18 TOSHIBA P 5 2 T R I P C U R R E N T +52-l 53-1-r P 5 3 T R I P C U R R E N T S E C I T (A) State at I tern...
  • Page 19 TOSHIBA 5.11 Handling of Hemory Card The SZE21s each have a dedicated memory card, which is used for backup of S2E21 settings and as information media for the monitor system (purchased separately) The specifications of the memory card are that includes personal computers.
  • Page 20 TOSHIBA Procedure for loading the backed-up settings of the memory card into the Register the MACH. ID and PASS ID of the S2E21. (MACH. ID and PASS ID must be the same as those when the settings were backed up in the memory card.) (See 5.3.3.

  • Page 21: Installing Battery

    TOSHIBA Table 4 Memory Card Specifications Item Description Manufacturer Toshiba MCA 5101BAA S-RAM Memory type Capacity 32 kbytes Scheme Memory bus scheme Pin number 40 pins Battery Lithium coin battery (3 V) Battery life Not in relay Approx. 2 years...
  • Page 22 TOSHIBA Write-protecting the memory card: The memory card is provided with a write- protect switch for preventing inadvertent writing. Turn on the write-protect switch (to set the write-protect) except when storing the data into the memory card. To set the write-protect: Move the write-protect switch to the right side (to align with the mark-7’).
  • Page 23 TOSHIBA 0 (0) NON- F A I L - S A F E 29-3 --) TRIP A L A R M 0 LOCK State at Description Item Sets the operation mode of the output relay. Setting Energized-on The output relay is energized on operation.
  • Page 24 TOSHIBA State at Description de I ivery Continuously The output relay is energized at normal condi- tion. The state of output contact is shown below energized in the case of tripping. (fai Isafe) Open Closed p r o v i d e d...
  • Page 25 TOSHIBA R Y O / P S E L . I N S T S P A R E 1 S P A R E 2 Description Item jetting Sets the operation condition for the output relay. Selects a unit that drives the alarm output relay when an alarm is detected.
  • Page 26 TOSHIBA State at Description Specifies a unit that drives the trip output 30-3 Trip relay when a trip is detected. Others: Enter either “0” (not operate) or “1” (operate). The output is an ORed output of trip detections from the unit that drives the trip output...
  • Page 27 TOSHIBA P 3 1 S E T T I N G 31-1 --t 31-2 ‘+ 1 O=RTD4 State at I tern Description delivery Setting Selects an analog transducer output. 31-1 31-2 Selects a measuring unit that outputs data to the analog transducer.
  • Page 28 TOSHIBA 32-2 + R T D 7 R T D 8 10062 State at delivery Sets the kind of RTD. Kind of RTD RTDl to RTD8: Selects the corresponding RTD type. Different RTD types can be selected on one relay.
  • Page 29 Trip level Setting range: 0 - 200 "c Reset level Sets a reset temperature for each RTD. 100 'c 33-4 After the temperature goes below the reset level. the S2E21 can then be reset. Setting range: 0 - 200 C...
  • Page 30 TOSHIBA P 3 4 S E T T I N G 34-1 + * A U T O L E A R N I N G * 1 s t 34-3 --t T s t 34-4 + State at I tern...
  • Page 31 TOSHIBA State at Description Item delivery Automatically detects the starting time and starting 34-3 specifies whether or not the detected starting time time is used as the setting value. Enter either 0 (OFF) or 1 (ON). When 0 (OFF) is entered, the starting time is displayed (P4) but the input setting value;...
  • Page 32 TOSHIBA State at Description de 1 i very Cooling time Automatically detects the cooling time constant 14-5 and specifies whether or not the detected value constant is taken as the cooling time constant setting. constant is automatically detected and the detected value is taken as the setting value.
  • Page 33 TOSHIBA P 3 5 S E T T I N G Clear data (1 : A L L 5 : T t r u n 7 : LEARNED TD 8 : MAX STARTS) Description : tern Clears accumulated data and held data.
  • Page 34 TOSHIBA 5.9 Testing M-1 + RESET S P A R E 1 S P A R E 2 ( 4 - 2 OmA) 1 tern Description Testing Perform tests on the input/output circuit. Input Displays the state of contact input from the terminal block.
  • Page 35 TOSHIBA State at Description delivery Changes the outpit of the analog transduser. Press [EXE1 key. The cursor appears, and enter a current value (4-20 mA) to be output from the analog transducer. The output current is checked externally.
  • Page 36 TOSHIBA 5.10 Failure Information T R I P 50-l 50-3 6 0 . 0 State at Item Description Displays information at the date and time of the Trip 50-l information latest current-associated trip. Cause of trip is displayed. Time Dispiayes the date and time at which the trip 50-2 occurred.
  • Page 37 TOSHIBA T R I P P 5 1 RTD 1 R T D 4 RTD7 R T D 8 State at Description delivery Displays information at the date and.time of the latest trip. RTD number. that has tripped is displayed.
  • Page 38 TOSHIBA P 5 2 T R I P C U R R E N T +52-l 53-1-r P 5 3 T R I P C U R R E N T S E C I T (A) State at I tern...
  • Page 39 TOSHIBA 5.11 Handling of Hemory Card The SZE21s each have a dedicated memory card, which is used for backup of S2E21 settings and as information media for the monitor system (purchased separately) The specifications of the memory card are that includes personal computers.
  • Page 40 TOSHIBA Procedure for loading the backed-up settings of the memory card into the Register the MACH. ID and PASS ID of the S2E21. (MACH. ID and PASS ID must be the same as those when the settings were backed up in the memory card.) (See 5.3.3.
  • Page 41 TOSHIBA Table 4 Memory Card Specifications Item Description Manufacturer Toshiba MCA 5101BAA S-RAM Memory type Capacity 32 kbytes Scheme Memory bus scheme Pin number 40 pins Battery Lithium coin battery (3 V) Battery life Not in relay Approx. 2 years...
  • Page 42 TOSHIBA Write-protecting the memory card: The memory card is provided with a write- protect switch for preventing inadvertent writing. Turn on the write-protect switch (to set the write-protect) except when storing the data into the memory card. To set the write-protect: Move the write-protect switch to the right side (to align with the mark-7’).
  • Page 43 TOSHIBA Inserting and withdrawing the memory card Inserting the memory card: the display control section to open it and then perform the following. Insert the memory card into the guide with the upper surface of the card facing toward the right;...
  • Page 44 TOSHIBA 5.12 Directional Ground Unit (DG) The direc:tional ground unit has three kinds of directional ground modules. For detail, see the next manuals. for 10 A grounded system The terminal numbers 47 to 66 in the above manuals are read for SZE21 in this manual.
  • Page 45 TOSHIBA MAINTENANCE INSPECTION This chapter summarizes the method of maintenance and inspection for assuring normal operation of the SZE21 for a long period of service. Consult this chapter when you make periodic inspection and troubleshooting. 6.1 Periodic Inspection Inspection of the SZE21 should be done according to the following criteria.
  • Page 46 Check for abnormal indication, damages or other abnormalities. 6.1.3 Replacing Parts The follolving parts should be replaced periodically. Replacement interval: about 5000 hours of lighting Parts to be replaced: Part code Part name Remark Liquid crystal TOSHIBA display TLX-341AX with special connector...
  • Page 47 TOSHIBA Method of replacement: Turn off the control supply for SZE21. Open the display section. Disconnect the LCD wire at the connector. Remove the four screws that fix the LCD and then remove the LCD. Moount a new LCD and fasten the set screws.
  • Page 48 TOSHIBA Install the new battery. Reset the calendar and clock. the batt& Installing...

  • Page 49: Troubleshooting

    TOSHIBA 6.2 Troubleshooting What to do Possible cause Check point Phenomenon If the control power Power LED is off. Control power is connection is wrong, off or incorrect. correct it. (See Section 4.2.) -Turn control power off Error LED is'l.it. There is an internal problem and turn it on again.
  • Page 50 TOSHIBA Check point Possible cause #hat to do Phenomenon Setting value is Press the [EXE] key and enter all setting values again. (NOTE) Normal. Display other pages. lit. (See Section 5.3.1.) Second cannot Normal. The second setting be set. is not provided.
  • Page 51 TOSHIBA Check point Possible cause What to do Phenomenon Dn P28 Normal. PRE-ALM setting of UC has a range between ting of 1JC 100% and 300%. does not go below 100%. Normal. ALM setting is not move to A.LM of...
  • Page 52 TOSHIBA Possible cause Hhat to do Check point Normal. Stop the motor and Cannot be Trip state continues (OC. UC. correct the problem. reset. INST. LIB. OCG) After OL. the reset Normal. level (28-4) of 19 S cool. and B R (2-3).is still exceeded.
  • Page 53 TOSHIBA 6.3 Bench Test Decision Test Test method 1 ten circuit (single phase) Figure 15 Operat- Gradually increase current and record the current value when the point RUN LED begins blinking BSM: Stator allowable at 0.3 s intervals. temperature rise...
  • Page 54 TOSHIBA Test method Decision Item Test circuit (single Operat- Apply rated current and Setting value *lo% Figure 15 gradually lower the point current. Measure the current value at which the relay trips. Setting value *10X.‘ Operat- Figure 15 current (IN).
  • Page 55 TOSHIBA Decision Test Test method Item circuit (single phase) 75% rtlO% of the rated Figure 16 Slowly reduce the current (IN) current and measure point the current value at which the relay trips. Less than 4 s. Figure 16 Clperat- 1) Apply the rated...
  • Page 56 TOSHIBA Test method Item Decision Test circuit (single phase) Opet-at- 1) On P2, check that Figure 15 not 0. clear OR. time applied current from 0 to 3 times the rated current (I and measure the time it takes for the relay to trip.
  • Page 57 TOSHIBA Figure 15 Test Circuit (1) Figure 16 Test Circuit (2) Figure 17 Test Circuit (3)
  • Page 58 TOSHIBA PROTECTIVE DETECTION SCHEME This chapter describes how the protective unit of the SZE21 detects failures. 7.1 Overload Unit This is a function to thermally protect the motor insulations. The component to Changes in stator temperature when the motor be protected is mainly the stator.
  • Page 59 TOSHIBA Time Time (a) During operation Figure 15 Stator temperature rise In other words, the stator temperature rises exponentially during motor operation to a certain temperature that is determined by the current magnitude. When the motor is stopped, the stator temperature falls down to the ambient temperature.
  • Page 60 TOSHIBA Full load operation s t a r t Overload operation stop S t a r t i n g c u r r e n t - - - - - R a t e d c u r r e n t - - - -...
  • Page 61 These values are also supplied as the motor data. When they are not shown. request them from the motor manufacturer. As a reference. the standard values of Toshiba motors are shown in Table 6. Table 6 Heating Time Constant of Motor (Toshiba Standard Values)
  • Page 62 The Locked Rotor Unit (L.R) has a main function of protecting the rotor of a motor as opposed to the Overload (OL) which protects the In providing protection, the S2E21 simulates temperature rises of the stator and rotor in a motor independently because each has different thermal characteristics.
  • Page 63 TOSHIBA Where 6R: temperature rise of the rotor at time t CC) heating time constant of the motor (minute) (set value) When the load current is higher than 2.5 times the rated current (2.5 x IN < I(t)): From the heating characteristic during locking that isdetermined by the motor starting current (1st) and the allowable locking time.
  • Page 64 TOSHIBA When the starting current is flowing in the locked state. the operating time will be as follows: In equation (5). since 6’R(O) = 0. the operating time is TX (set). In equation (5), since 9 R(O) = BSN, the operating time will be T~H = Where 6’SN: rated temperature rise value (set) (setting value)
  • Page 65 TOSHIBA (iii) In operati,ng condition: In reality, 0 R(O) falls between 0 and BSN. The operating time in this case is given by: 6’ RM Where T : operating time...
  • Page 66 TOSHIBA 7.3 Repetitive Starting When the motor is started, the repetitive starting protection checks the starting current and the starting time to see if the temperature rise exceeds If the allowable temperature rise of the rotor':; allowable temperature rise. the rotor is exceeded, this protective function issues a lock signal to prevent the motor from starting.

  • Page 67: Starting Current

    TOSHIBA 7.4 Detection of Starting Current and Starting Time The SZE21 checks a motor current to detect whether the motor is stopped. The detection conditions are as follows: starting, running or overloaded. current (IN). From the time when the motor current exceeds 1.5 times the motor rated current until the motor current falls below 1.5 times the motor...
  • Page 68 TOSHIBA 7.5 Detection of the Heating Time Constant and Cooling Time Constant CAUTION: Detecting the heating time constant and the cooling time constant requires three RTDs in the winding and one RTD for measuring the ambient temperature to determine the To enhance the detection accuracy, motor temperature rise.
  • Page 69 RTDs. The S2E21 receives signals from the three RTDs in the winding at its inputs the heating time constant and the cooling time constant from the motor temperature rises.
  • Page 70 TOSHIBA 7.6 Settings llased on Fundamental Information according to fundamental information alone that you can obtain from the rating nameplate of the motor, the following steps should be taken. In this case. however, use overly conservative characteristics to ensure the motor safety.
  • Page 71 TOSHIBA 21-6: Setting of the allowable motor locking time '(6SMj Setting depends on the insulation class of the winding. Table 5 (Table Al). 21-T: Setting of the rated temperature rise (6'SN) Under this condition, the operating point of OL is given by 1.1 x IrnFLC...
  • Page 72 TOSHIBA 23-4: Setting of UC time (TUG) Set to 1 s. 24-2: Setting of OCG current (IO,,) To prevent undesired operation, Set to 10 24-3: Setting of OCG time (TO& Set to 0.1 s. 25-2: Setting of allowable locking time in cold condition (TSC) Given value (Consult motor manufacturer>...
  • Page 73 TOSHIBA '7.7 Settings For Reduce Voltage Starting For reduce voltage starting, the actual starting current is different from the nameplate of the motor. Perform the following steps for setting of TSC. protection. In this case, Auto learning function of Tst and 1st should not be turned on.
  • Page 74 TOSHIBA 1. 5:lO 0.3-I. 0 sec. Ground 0 P2.5 Starting CWrentlllFLA starting Time oc Alar. Selection of Fall-safe or Non-Fall-safe O~erarmn Selection of Fall-safe or Non-Fall-safe Opt , Selection of -- 121 -...