Description
ABB 1SVR730885R4300
Technical Specifications:
- Time Range: Wide, selectable time ranges from milliseconds to hundreds of hours.
- Timing Functions: Supports on-delay, off-delay, star-delta, pulse, and interval timers.
- Supply Voltage: Multi-voltage AC/DC supply capability.
- Output Contacts: High-capacity changeover relay contacts.
Functional Features:
- Multi-Functionality: Single module replaces multiple dedicated timer relays.
- High Precision: Microprocessor-based timing with minimal drift over temperature.
- Visual Feedback: LED indication of timing status and output state.
- Compact Design: Standard 22.5mm or 35mm DIN rail width.
Application Scenarios:
- Star-delta motor starting transitions.
- Delayed pump sequencing in water treatment.
- HVAC fan delay and purge cycles.
- Conveyor belt staggered start-up to prevent power surges.
Material Composition & Structural Characteristics:
- Dial/Display: Precision mechanical dial or digital display for time setting.
- Circuit Board: Conformal-coated PCB for environmental protection.
- Terminals: Clearly marked, recessed terminals to prevent accidental short circuits.
Working Principle:
Upon receiving a trigger signal or supply voltage, an internal timing circuit begins counting. Once the preset time elapses, the internal relay actuates, changing the state of the output contacts. The timing function determines whether the relay actuates immediately and drops out after the delay, or waits for the delay before actuating.
Upon receiving a trigger signal or supply voltage, an internal timing circuit begins counting. Once the preset time elapses, the internal relay actuates, changing the state of the output contacts. The timing function determines whether the relay actuates immediately and drops out after the delay, or waits for the delay before actuating.
Installation Requirements:
- Function Selection: Set the timing function selector switch before applying power.
- Time Setting: Adjust the time dial or digital parameters to the desired value.
- Wiring: Connect the trigger signal and load according to the wiring diagram for the selected function.
Usage Precautions:
- Power Cycle: Some timing functions require a complete power cycle to reset the timer.
- Load Type: Account for inductive loads and use appropriate suppression.
- Verification: Use a stopwatch or PLC timer to verify the actual delay time during commissioning.
