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Schneider Harmony RE22 Modular Timing Relay
Schneider RE22 Series Modular Timing Relay, DIN Rail (Schneider RE22 timing relay) for adding time delays and timed switching functions to control circuits. Available in the UAE from Auzar.
Description
The Schneider RE22 Timing Relay delivers reliable interval timing, flexible multi-range adjustment, and durable contact switching engineered specifically for industrial control panels, pump alternating skids, HVAC air handling units, and automated packaging machinery.
Precision Industrial Timing with the Schneider RE22 Timing Relay
Part of the established Harmony timer range, the Schneider RE22 Timing Relay provides responsive timing control within a slim 22.5 mm DIN-rail mountable enclosure. Designed to optimize control cabinet space, this modular device enables precise coordination of automated sequences—such as motor star-delta starting, conveyor dwell staging, delayed ventilation shutoffs, and cyclical liquid dosing—without demanding complex programmable controller programming.
The front faceplate features intuitive, tamper-resistant rotary potentiometers protected by a transparent hinged cover, allowing technicians to calibrate timing spans, fine multipliers, and operational functions with high accuracy. Dual high-visibility LEDs give operators immediate visual confirmation of power availability and relay output energization, streamlining commissioning and preventive maintenance routines on the plant floor.
Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Product Series | Schneider Harmony Timer Relays (RE22 Series) |
| Housing Width | 22.5 mm modular DIN-rail format |
| Contact Configuration | 1 C/O (SPDT) or 2 C/O (DPDT) changeover contacts |
| Rated Operational Current | 8 A at 250V AC / 30V DC (resistive load, cosφ = 1) |
| Time Delay Range | 0.05 s to 300 h (configurable via graduated front dials) |
| Supply Voltage Window | 24 to 240V AC/DC (50/60 Hz) wide-range input |
| Repeat Accuracy | ±0.5% in accordance with IEC 61812-1 standard |
| Dielectric Strength | 2.5 kV AC for 1 minute between coil and contact sets |
| Terminal Type | Screw clamp terminals accepting solid or flexible ferruled conductors |
| Electrical / Mechanical Life | 100,000 cycles (AC-1) / 10,000,000 mechanical operations |
| Ambient Operating Limits | -20 °C to +60 °C (-4 °F to +140 °F) |
Industrial Applications and Process Integration
The Schneider RE22 Timing Relay is installed across diverse automation sectors and plant electrical cabinets, including:
- Star-delta reduced voltage motor starter transitions and motor soft-stop sequences.
- Conveyor transfer table staging, carton index delaying, and diverter gate timing.
- Industrial pump alternation, backwash filtration cycles, and pressure booster damping.
- HVAC ventilation purge routines, exhaust fan delays, and chiller restart protection.
Frequently Asked Questions
What common timing functions are supported across the Schneider RE22 family?
Depending on the specific sub-reference selected (e.g., RE22R1AMR, RE22R2AMU), the series provides essential functions including Power ON-delay (Function A), Off-delay with control signal (Function C), Symmetrical flasher/flicker (Function L/Li), and Interval timing (Function H).
How do technicians protect dialed time settings from accidental adjustments?
The unit includes an integrated, clear plastic front cover that latches securely over the adjustment potentiometers. This protective cover prevents accidental knob rotation from mechanical vibration or unauthorized personnel intervention.
Can the RE22 timing relay be wired to both AC and DC control voltages?
Yes. The universal internal power electronics accept line supplies from 24V up to 240V in both alternating current (AC 50/60 Hz) and direct current (DC), simplifying cabinet parts stocking across standard international supply voltages.
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