RCT605 Dual Display Multifunction Digital Timer

The Radix RCT605 is a panel-mounted industrial multifunction timer designed for precision automation applications. Its dual-display arrangement allows two programmed setpoints to be monitored simultaneously, while built-in non-volatile memory retains elapsed time indefinitely.

The timer uses a quartz crystal time-base with an accuracy of 0.01% of the reading. It offers nine selectable timing ranges, from 10 milliseconds to 9999 hours, with incrementing or decrementing counting according to operator programming.

Housed in a 72 × 72 mm plug-in enclosure, the RCT605 allows rapid maintenance without touching the rear terminal wiring. It operates from 85–265 VAC/DC or a 24 VDC source and uses two independent electromechanical relays, each rated at 5 A/230 V AC resistive.

Working Principle of the Radix RCT605 Digital Timer

The RCT605 measures elapsed time using a quartz crystal time-base. The selected timing range determines the time interval, while the programmed counting direction determines whether the display increments or decrements.

The timer incorporates 12 timing functions across three distinct operating modes. Depending on the selected function and programmed setpoints, the two independent relays energise when the elapsed time reaches the corresponding setpoints.

Non-volatile memory retains elapsed time indefinitely during a power outage, allowing the timing information to remain available when power is restored.

Types of the RCT605 Timer

The RCT605 is available in two input configurations.

RCT605 Fixed Input Series - Order Code: 2234-01

This version has four dedicated, factory-assigned control inputs:

Start
Reset
Gate
Stop

The fixed-input configuration provides a straightforward, ready-to-wire solution for standard automation panels and machine cycles.

RCT605 Configurable Input Series - Order Code: 2234-02

The Configurable Input Series provides fully customisable control terminals. Engineers can assign specific logic to the inputs, including:

Start
Gate freeze variations
Stop functions
Multiple Reset options

This arrangement is intended for multi-signal interlocking circuits where greater control flexibility is required.

Why Choose the Radix RCT605 Dual Display Multifunction Timer?

The RCT605 is suited to applications that require more than a basic single-function timer. Its dual-display arrangement allows two setpoints to be monitored simultaneously, while the two independent relay outputs support separate timing operations.

The choice of fixed or configurable inputs allows the timer to be matched to the control requirements. Standard machine cycles can use the dedicated-input version, while more complex sequences can use configurable Stop, Reset and Gate functions.

For processes affected by power interruptions, non-volatile memory retains elapsed time indefinitely.

Key Advantages and Features

Panel-mounted industrial multifunction timer
Dual-display digital timer
Built-in non-volatile memory
Elapsed time retention during power outages
72 × 72 mm plug-in enclosure
Maintenance without touching rear terminal wiring
85-265 VAC/DC or 24 VDC supply
Quartz crystal time-base
Accuracy of 0.01% of the reading
Nine selectable timing ranges
Timing range from 10 milliseconds to 9999 hours
Incrementing or decrementing counting
12 timing functions
Three distinct operating modes
Two independent electromechanical relays
Relay rating: 5 A/230 V AC resistive
Fixed Input and Configurable Input Series
Four dedicated control inputs in Fixed Input Series
Three Stop function variations in Configurable Input Series
Three Reset function variations in Configurable Input Series
Three Gate function variations in Configurable Input Series

Timing Functions and Operating Modes

The RCT605 incorporates 12 timing functions across three operating modes, providing flexibility for different industrial timing requirements.

The selected timing function determines how the timer responds to the programmed setpoints and control inputs. The two independent relay outputs provide separate relay operations when the corresponding elapsed times reach their programmed setpoints.

Dual Setpoint Monitoring

The dual-display arrangement allows two distinct setpoints to be monitored simultaneously.

This makes the RCT605 suitable for processes where two timing values need to be observed within the same application. The two independent electromechanical relays provide corresponding relay operations when elapsed time matches the programmed setpoints.

Non-Volatile Elapsed Time Retention

The RCT605 uses built-in non-volatile memory to retain elapsed time indefinitely during power outages.

This feature is useful for processes where losing the elapsed timing information during an unexpected power interruption could affect the ongoing operation. The retained timing information allows the process to recover its timing state after power is restored.

Flexible Input Configurations

The two RCT605 versions address different control requirements.

The Fixed Input Series uses dedicated Start, Reset, Gate and Stop terminals for standard machine cycles and simple gate operations.

The Configurable Input Series allows greater flexibility by providing three variations each of the Stop, Reset and Gate functions. This configuration is intended for control circuits requiring advanced logic, including pulse reset and delayed cycle restart requirements.

How to Choose the Right RCT605 Version

Choose the RCT605 Fixed Input Series when you need an economical, ready-to-wire timer for standard equipment Start, Stop, Reset and simple Gate operations.
Choose the RCT605 Configurable Input Series when the control circuit requires advanced input logic, such as an immediate Pulse Reset or delayed cycle restart.

Specify the RCT605 when the application requires dual-display monitoring of two distinct setpoints.

Applications of the RCT605 Dual Display Multifunction Timer

The RCT605 is suitable for industrial automation applications involving programmable timing, machine sequencing and process timing.

Typical applications include:

Process automation
Repetitive industrial machinery cycles
Duty cycling
Power failure recovery
Extended component endurance testing
Conveyor interlocking
Complex motor starting sequences

Use Cases and Solutions

Power Failure Recovery

The non-volatile memory retains elapsed time indefinitely during power outages, allowing the timing process to resume after an unexpected factory blackout.

Process Automation

The available timing functions support ON delay, OFF delay and Cyclic relay switching for repetitive industrial machinery cycles.

Extended Testing Rigs

With timing ranges extending up to 9999 hours and quartz crystal stability, the RCT605 can be used for continuous component endurance trials.

Conveyor Interlocking

Configurable control inputs and two independent relays allow the RCT605 to execute complex motor starting sequences for conveyor interlocking applications.

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