Time relay MTR17-TTZ-U240-216 equipped with universal power supply can be connected to any AC/DC voltage source in range of 12…240V. Performs TZ function to control Star-Delta contactors requred to reduce inrush currents for 3 phase motors. Microcontroller based circuit ensures high stability of time counter.
Designed to use in industrial automation systems.
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Star-Delta start-up (TZ) – when the supply voltage U is applied, the output relay for the Star contactor switches into on-position (yellow LED illuminated) and the set star interval T1 begins (green LED flashes slowly). After the star interval T1 has expired (green LED flashes rapidly), the output relay for the star contactor switches into off position (yellow LED not illuminated) and the set transit interval T2 begins. After the transit interval has expired, the output relay for the delta contactor switches into on-position (green LED illuminated). To restart the function, the supply voltage must be interrupted and reapplied. |
Connections |
Front panel |
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| Version | MTR17-TTZ-U240-216 |
|---|---|
| Output Circuit |
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| Contact arrangement | 2x 1NO/NC |
| Rated switching current In | AC1 – 16A/250V AC DC1 – 16A/24V DC |
| Maximum continuous current | 12A |
| Switching load range AC1 | 4 000VA |
| Rated/maximum contact voltage | 250/400V AC |
| Contact resistance | ≤ 100mΩ |
| Maximum switching frequency |
600 cycles/h |
| Input Circuit |
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| Supply voltage Un | 12…240V AC/DC |
| Supply voltage range |
0,8…1,1Un (9,6…264V) |
| Rated consumption | AC: ≤ 2,5VA DC: ≤ 2W |
| Rated frequency | 47…63Hz |
| Rated surge voltage | 1 000V |
| Insulation |
|
| Insulation rated voltage | 250V AC |
| Rated surge voltage | 4 000V (1,2/50μs) |
| Overvoltage category | III |
| Pollution degree |
2 |
| Flammability | PCB: V0, housing: HB |
| Dielectric strength input-output | 4 000V AC |
| Dielectric strength open contact | 1 000V AC |
| Dielectric strength between contacts | 4 000V AC |
| General Data |
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| Electrical life AC1 at 50% In | ≥ 150 000 |
| Mechanical life | ≥ 30 000 000 |
| Dimensions (L x W x H) | 90 x 17,5 x 66mm |
| Weight | 71g |
| Ambient temperature | -20°C …. +55°C |
| Relative humidity | 85% |
| IP rating | IP20 |
| Shock resistance | 15g |
| Vibration resistance | 0,35mm (10…55Hz) |
| Terminals | max 2,5 mm² |
| Installation | DIN rail 35mm |
| Time Module |
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| Functions |
TZ |
| Time ranges |
10s, 30s, 1m, 3m, 10m, 30m, 1h |
| Timing adjustment | smooth 0,05…1,0 x range |
| Setting accuracy |
5% |
| Repeatability | 0,5% |
| Recovery time | ≤ 100ms |
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Order by e-mail |
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MTR17-TTZ-U240-216 Datasheet |
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Time Relay selection table |
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Declaration of conformity CE |
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It is used to secure loads (eg. motors) from the voltage unbalance, incorrect phase sequence or damage to the executive contactor’s contacts.
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