Schneider Electric

Telemecanique

TeSys

LTMR (TeSys T)

(Control modes) Local via terminal block; Local via HMI terminal; Remote via network
(Operating modes) Overload; Independent; Reverser; 2-step; 2-speed; "Custom" mode
(Fault management) Manual reset; Automatic reset; Remote reset
(Fault statistics) Protection fault counters
(Fault statistics) Protection alarm counters
(Fault statistics) Diagnostic fault counters
(Fault statistics) Motor control function counters
(Fault statistics) Motor control function counters
(Fault statistics) Fault history
(Fault diagnostics) Internal watchdog fault
(Fault diagnostics) Controller internal temperature
(Fault diagnostics) Temperature sensor connection
(Fault diagnostics) Current connection
(Fault diagnostics) Voltage connection
(Fault diagnostics) Motor control commands (start; stop; run check back and stock check back)
(Fault diagnostics) Control configuration checksum
(Fault diagnostics) Loss of communication
(Motor statistics) Number of motor control commands (O.1/O.2 starts)
(Motor statistics) Operating time
(Motor statistics) Number of starts/hour
(Motor statistics) Last start I max.
(Motor statistics) Duration of last start
(Thermal overload statistics) Time to trip
(Thermal overload statistics) Time to restart
(System operating statistics) Run; On; Start; alarm; fault

3 Pole(s)

(Thermal overload) Class 5; 10; 15; 20; 25;30
(Thermal overload) Inverse thermal definite time
(Motor temperature) PTC binary
(Motor temperature) BTC/NTC analogue 20-6500 Ohm
(Phase imbalance) 10-70% I average 0.2-20s
(Phase failure) 0.1-30s
(Phase reversal) A-B-C
(Phase reversal) A-C-B
(Long starting time) 100-800% of FLC - 1-200s
(Locked rotor) 100-800% of FLC - 1-30s
(Minimum current load limit variations) 30-100% of FLC - 1-200s
(Maximum current load limit variations) 20-800 of FLC - 1-250s
(Earth fault) internal 50-500% min FLC - 0.5-25s
(Earth fault) external 0.02-10A - 0.1-25s
(Frequent starting) 0-999.9s

Modbus

Electronic (Programmable)

(DC) 24 V

0.4-8 A
(maximum with CT) 800 A

0.4 A

8 A

Commercialized

(50-60Hz) 690 V

EN 60947-4-1
IACS E10
IEC 60947-4-1
UL 508
CSA C22.2 No 14

3 measurement current transformers
(control circuit) Screw-clamp

Thermal overload (1 alarm; 1 trip) thermal protection of motor by monitoring current consumption
Motor temperature (1 alarm; 1 trip) thermal monitoring of the motor using temperature probes (winding; paper...). Up to 3 sensors in series.
Phase imbalance (1 alarm; 1 trip) monitors the symmetry of currents. To be used for imbalance < 80 % of the average current.
Phase failure (1 alarm; 1 trip) monitors the symmetry of currents. To be used for imbalance < 80 % of the average current.
Phase reversal (1 alarm; 1 trip) signals when the phase sequence is different from the defied sequence (motor running).
Long starting time (1 alarm; 1 trip) monitors the motor starting time.
Locked rotor (1 alarm; 1 trip) locking detected by a sudden increase in current after the start phase.
Minimum current load limit variation (1 alarm; 1 trip) monitors motor load through variations of current around preset thresholds.
Maximum current load limit variation (1 alarm; 1 trip) monitors motor load through variations of current around preset thresholds.
Earth fault (1 alarm; 1 trip) signals internal insulation faults by vectorial summing of external currents via earth fault toroid.
Frequent starting (inhibits start) Protects the motor against overheating due to frequent starting.

(Measurement) Current/Phase 0.08-1000A
(Measurement) earth current 0.1633 x CT ratio
(Measurement) Average current 0.08-1000A
(Measurement) Current imbalance between phases 0-200%
(Measurement) Thermal capacity level 0-200%
(Measurement) Motor temperature rise 0-6500 Ohm