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Latest press releases from DOLD


Latest press releases from DOLD


Are you driving or charging?

Fast charging but safe - insulation monitoring in DC charging stations
The number of electric vehicles is constantly increasing and will grow even faster in the future. This will also help to expand the charging station infrastructure, as DC charging stations are the first choice when electric vehicles need to be charged in the shortest possible time. Electrical safety must be ensured during the charging process. For this purpose, an unearthed DC power supply system ...more

Control functions on safety door

Guard lock with command and indication functions
DOLD extends the safety switch and key transfer system SAFEMASTER STS by a further safety switch with guard lock. Up to three command and indication functions can be easily integrated into these. SAFEMASTER STS thus combines the advantages of safety switches, guard locks, key transfer and command functions in a single system. This meets the highest safety requirements up to Cat. 4 / PL e or SIL 3.The integrated ...more

Multifunctional measuring relay

Now also approved for use on ships
With the MK 9300N of the VARIMETER PRO series, DOLD combines up to nine monitoring functions in a housing only 22.5 mm wide. This universal measuring and monitoring relay thus offers a functional diversity unparalleled so far at this minimal unit width.Troublefree and economic operation of machines and systems is guaranteed only by the reliable and continuous monitoring of three-phase systems. Depending on the need, the VARIMETER ...more

Wireless Functional Safety

Safety and control functions via radio
Whether in bidirectional pair operation or unidirectional group operation – the innovative wireless safety system UH 6900 of the DOLD SAFEMASTER W series ensures the safety-oriented, wireless transmission of emergency stop and control functions. As a result, the safety system provides more flexibility in safeguarding hazardous areas as well as greater efficiency and economy. The wireless safety system comes into its own ...more

Secure drive systems sensorless

Safe frequency monitor now also with UL apporval
Ensure high security for an economical price, the speed and frequency monitor UH 6937 from the SAFEMASTER S series opens up new possibilities in machine safety for construction, planning, and retrofitting, for instance in wood machining or for tooling machines.Monitoring the output frequency of drive inverters is just one of its many uses. In case of over- or under-frequency, or if the frequency falls outside the set ...more

Electrical Safety for Power Supplies!

Reliable Insulation Surveillance in IT Networks
The demand for the availability of machines and plants in the region of factory machinery and process technology is constantly increasing. The requirement for this is a functioning and reliable power supply. Unexpected insulation faults in the plants can lead to unwanted supply disruptions culminating in damages to persons and property. Therefore, insulation surveillance equipment in IT systems is required.The ...more

Comfortable Speed Monitoring

Increased safety with machines and devices
With the safe speed monitor UH 6932 from the SAFEMASTER S-Series offers DOLD a comfortable solution for safety-focused speed monitoring, and how it comes into usage in wind turbines, centrifuges or in stage technology. The device excels itself particularly through simple operation and comfortable equipment. Standstill, high and low speed, are safely monitored in automatic operation as well as adjustment.The speed monitor ...more

Saves space and costs

Intelligent motorstarter with motor protection function
The intelligent motorstarter UG 9256 from DOLD's MINISTART series controls 3-phase reversing drives up to 4 kW cost-effectively. It combines up to six functions in a space saving compact en-closure with only 22.5 mm width. The motor controller also offers a soft start / soft stop function, as well as the reversal function, a current monitoring and a mo-tor protection function. In addition, the intelligent ...more

Avoiding thermal overload

Protect motors by VARIMETER EX
MK 9163N ATEX and MK 9003 ATEX avoid reliably thermal overload on motors. The devices of the VARIMETER EX series of DOLD monitor and protect standard motors and explosion proof motors equipped with PTC resistors fulfilling the directive 94/9/EC.The devices that are tested for functional safety (EN 50495, EN 61508 und EN ISO 13849) are used in applications with harsh environment or conditions e.g. fast switching cycles, heavy duty ...more

Intelligent, flexible and high-performing!

Soft starter with thermal motor protection for three-phase current compressors
The soft starter PF 9029 from DOLD’s MINISTART family is a robust, electronic control unit for soft starting three-phase current compressors with integrated monitoring functions. With an installation width of 67.5 mm, the PF 9029 offers soft starting, thermal engine protection, and voltage and phase sequence monitoring in just once device in order to safely operate a system of this ...more

Space-saving phase monitor!

Voltage monitoring in three-phase mains
The space-saving phase monitor RK 9872 from the VARIMETER family by DOLD performs reliable monitoring of three-phase mains. With an overall width of 17.5mm, under and overvoltage along with the phase sequence in three-phase mains are all simultaneously monitored to safeguard the operation of motors and systems. The RK 9872 particularly shows its strengths when there is little space in the control cabinet.The phase monitor ...more

Quick insulation fault location

Now with Modbus RTU
The fault-detection process for insulation faults can become a costly and time-consuming process in extensive industry systems. The insulation fault location system of the VARIMETER EDS family from DOLD, consisting of a test current generatorRR 5886 and the insulation fault search device RR 5887, monitors and locates insulation faults in a quick and safe manner in complex, isolated AC/DC mains (IT systems). The Modbus RTU interface allows a fast ...more

Added value for customers

Smart motorstarter with Modbus RTU
The motorstarter UG 9410 of the MINISTART series from DOLD can be connected directly to system controllers via the integrated Modbus interface, thus enabling optimum device configuration and flexible process control.Particularly when a large number of drive tasks are involved, such as the smooth start-up and shutdown of conveyor belts to protect the goods or the brief start-up and shutdown of screw conveyors to release blockages, ...more

Super compact safety module

More safety in a space-saving 17.5 mm
The 17.5 mm wide e-stop module UF 6925 of the SAFEMASTER series offers the highest safety in the narrowest spaces. The device is well-suited to monitor emergency stop buttons and safety gates in almost any application. Its broad voltage range from DC 8 to 36 V makes it impervious to voltage fluctuations, such as those that occur when activating battery-fed devices. This predestines the safety module for a great variety of ...more

Safety switch and key transfer system

Robust stainless steel mechanism in an attractive fibre reinforced polymer (FRP) design
SAFEMASTER STS combines the advantages of safety switches, guard locks, key transfer, and command functions in a single system. The highly robust stainless steel construction, trusted for many years, is now available with an even more sophisticated design. It offers a rugged stainless steel mechanism in an attractive fibre reinforced polymer (FRP) housing.The safety system was ...more

Reliably identify current faults!

Increased availability of machines and devices
The residual current monitor RN 5883 of the VARIMETER RCM family from DOLD, sensitive to all universal currents, records current faults either with DC or AC components in earthed supply systems (type B). Through early recognition of insulation faults, the RN 5883 provides a preventative service and maintains machines and devices. System downtime and production disruptions can consequently be avoided. The residual ...more

Now with safer speed monitoring

Configurable safety system SAFEMASTER PRO
DOLD expands the functional range of its modular and configurable safety systems SAFEMASTER PRO around safer drive function. It allows up to 12 axes to be monitored.The TÜV-certified system for safety requirements up to PL e/Cat. 4 and SIL CL3 also offers modules for safer speed and standstill monitoring of 1 or 2 axes per module. The speed measurement can occur either by using an encoder or a proximity sensor.The ...more

Electrical safety for power supplies!

Reliable insulation monitoring in mixed IT networks
Undetected insulation faults in non-earthed networks may lead to accidents with considerable personal injuries and property damages. Monitoring of IT networks by insulation monitors is therefore normatively mandated. The insulation monitor LK 5896 from the VARIMETER IMD series by DOLD was developed especially for use in modern power supply systems.These often include inverters, rectifiers, thyristor controllers and ...more

Commands at option

Flexible Option module for safety switch - and trapped key interlock system
The robust option module extends our safety switch- and trapped key interlock system SAFEMASTER STS. It allows a simple integration of command-, signal-, and emergency stop functions in already existing systems as well as in new safety concepts. Therefore the SAFEMASTER STS system will be a real “Control Center” that is able to control command functions, releases, main- and ...more

Bistable relay for energy-efficient design

With 8 forcibly guided contacts!
Special applications require relays that maintain their switch position during a supply voltage outage, thereby preventing loss of information about the current switch state. This relay is unique thanks to its high resistance to vibration and shock. The new bistable relay OB 5623 by DOLD fulfils these requirements. Furthermore, forcibly guided contacts allow for secure inquiry of the switch position.Reduced energy consumption in the ...more

The smallest emergency stop module in the SAFEMASTER family

Safety in a compact design
The bar has been set for miniaturising safety switches with the emergency stop moduleRK 5942 from DOLD’s SAFEMASTER family. With a mere overall width of 17.5 mm and a device depth below 70 mm, the compact emergency stop module is also suitable for use in installation and industry terminal blocks. The RK 5942 particularly shows its strengths when there is little space in the control cabinet.The emergency stop module serves to protect ...more

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