GESTRA URS 60, URS 61

Safety Control Units

GESTRA URS 60, URS 61 Safety Control Units
GESTRA URS 60, URS 61 Safety Control Units
GESTRA URS 60, URS 61 Safety Control Units
GESTRA URS 60, URS 61 Safety Control Units
GESTRA URS 60, URS 61 Safety Control Units

GESTRA URS 60, URS 61 Safety Control Units

URS 60 and URS 61 safety control units can be used in combination with various safety sensors as safety limiters for steam boiler and water boiler systems.

The equipment can be used as:

  • Low-level limiters, in combination with the NRG 1x-60/ NRG 26-61 level.
    Low-level limiters switch off the heating when the water drops below the set minimum level.
  • Safety high-level limiters, in combination with the NRG 1x-61/NRG 26-61 level electrode.
    Safety high-level limiters switch off the feedwater supply when the feedwater rises above the set maximum level.
  • Conductivity limiters, in combination with the LRG 1x-6x conductivity electrode.
    Conductivity limiters switch off the heating if the set maxi- mum conductivity is exceeded.
  • Safety temperature monitors/limiters, in combination with the TRV 5-60 temperature transmitter.
    Safety temperature limiters or monitors switch off the heating when the maximum admissible temperature is reached.

The above functions may be combined.

Viewing and operation take place using the URB 60 or SPECTORcontrol operating terminals.

The URS 60/URS 61 safety control unit cyclically evaluates data telegrams from up to four safety sensors, see “Admis- sible accessories..” table.

The data are transferred via ISO 11898 CAN bus using the CANopen protocol, and saved.

The safety functions are monitored by cyclical self-tests. The two integrated relays are switched off in the event of alarms or errors. Function tests and failure diagnosis can be performed using the control unit or an operating terminal.

Behaviour in the event of alarms

When level, temperature or conductivity alarms occur, both output contacts open after a power-off delay and this inter- rupts the safety circuit (fail-safe position). The safety con- trol unit does not lock independently; this function must be implemented in the downstream circuit. The URS 60 or URS 61 can only activate one safety circuit (heating or pump) at any one time.

The safety circuit is interrupted without a delay if the following fault indications occur:

  • Fault in sensors (negative self-test, excessively high temperature in terminal box)
  • Fault in control unit (negative self-test)

Communication failure

 

Supply voltage

  • 24V DC +/-20%

 

Power consumption

  • 7 W

 

Current input

  • 0.3 A

 

Internal fuse

  • T2A

 

Input/output

  • Interface for CAN bus to ISO 11898, CANopen, insulated

 

Safety circuit output

  • 2 volt-free relay contacts, connected externally in Contact material AgNi
  • Maximum switching current at switching voltages of 24V AC/DC, 115V AC and 230V AC: ohmic/inductive 6 A
  • Connected contactors must have interference sup- pression (RC combination) as per the manufacturer’s specifications

 

Required external fuse for the safety circuit

  • T2A or T1A for (EN 12952), 72 of operation

 

Signal output

  • 4 PhotoMOS outputs for external signalling, either with or without a delay
  • 24V DC, current load 100 mA, NO characteristic

 

Test input

  • 4 opto-coupler inputs for external test triggering, high active, 24V DC +/- 20%

 

Output relay switch-off delay

  • Factory default setting 3
  • Option of 10 seconds or 15 seconds

 

Indicators and controls

  • 4 x buttons for operation/initiating test function in sensor
  • 4 x green LEDs for indicating active channels
  • 4 x red LEDs for indicating a malfunction/alarm
  • 3 x yellow LEDs for indicating internal errors and external sensor errors
  • 1 x 10-pole code switch for setting the number of limiters, the delay and baud rate

 

Protection class

  • II double insulated

 

IP rating to EN 60529

  • Terminal box: IP 40
  • Terminal strip: IP 20

GESTRA URS 60, URS 61

Safety Control Units

GESTRA: The Ultimate Solution for Industrial Steam & Fluid Control Systems

The GESTRA URS 60 and URS 61 Safety Control Units are high-performance boiler safety controllers designed to ensure maximum operational safety, reliability, and compliance in industrial steam and boiler systems.

Developed with German engineering precision, GESTRA URS safety units provide fail-safe monitoring and automatic shutdown functions, protecting boilers from dangerous low-water conditions and system malfunctions.

For industries where safety is critical and downtime is costly, GESTRA URS 60 and URS 61 are the global standard.

✅ Certified Boiler Safety Protection

GESTRA URS units are specifically engineered to meet international boiler safety standards, ensuring safe operation under demanding industrial conditions.

✅ Fail-Safe Control Technology

Both URS 60 and URS 61 are designed with self-monitoring safety logic, providing immediate shutdown signals when unsafe conditions are detected.

✅ Seamless Integration with GESTRA Sensors

Optimized for use with GESTRA level electrodes and probes, ensuring accurate detection and stable system performance.

✅ Long-Term Reliability

Manufactured with industrial-grade electronic components, these safety control units deliver long service life with minimal maintenance.

The GESTRA URS 60 is a dedicated safety controller for low-water level protection in steam boilers and hot water systems.

Key Features:

  • Reliable low-water cut-off protection

  • Continuous self-monitoring safety circuitry

  • Fast response time for emergency shutdown

  • Designed for industrial boiler environments

Typical Applications:

  • Steam boilers

  • Hot water boilers

  • Industrial steam systems

The GESTRA URS 61 offers advanced safety functionality for complex boiler systems requiring redundant safety and higher control flexibility.

Key Advantages:

  • Enhanced safety diagnostics

  • High-precision signal evaluation

  • Ideal for multi-sensor safety configurations

  • Increased operational safety margin

Recommended For:

  • Power generation plants

  • Chemical and petrochemical industries

  • High-capacity industrial boiler installations

  • Industrial steam boilers

  • Power plants

  • Oil & gas facilities

  • Chemical processing plants

  • Food & beverage industries

  • Pharmaceutical manufacturing

  • High safety integrity level

  • Continuous self-diagnosis

  • Rapid fault detection and response

  • Reduced risk of boiler damage

  • Easy installation and commissioning

  • Low operating and maintenance costs

Purchasing original GESTRA URS Safety Control Units guarantees:

✔ Authentic manufacturer quality
✔ Full compliance with safety regulations
✔ Stable and reliable boiler operation
✔ Reduced operational risks
✔ Long-term cost efficiency

⚠️ Non-original safety controllers can compromise boiler safety and violate regulatory standards.

What is the function of GESTRA URS 60 and URS 61?

They are boiler safety control units used to monitor water levels and trigger emergency shutdowns in unsafe operating conditions.

What is the difference between URS 60 and URS 61?

The URS 61 offers enhanced diagnostic and safety features, making it suitable for more complex and high-capacity systems, while URS 60 is ideal for standard industrial boiler safety applications.

Are GESTRA URS units compatible with GESTRA level electrodes?

Yes. They are specifically designed to work seamlessly with GESTRA level electrodes and probes.

Can GESTRA URS safety units be used in high-pressure boilers?

Yes. Both models are engineered for industrial-grade pressure and temperature environments.

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