Solutions for wastewater treatment plants

Wastewater technology

In recent years, the situation in local and industrial wastewater treatment has changed dramatically. In addition to the restoration, modernization and maintenance of wastewater treatment plants, sewage disposal companies today have to face new challenges. For example, the treatment of residues such as microplastics or pharmaceuticals, the reduction of energy consumption, the increase of own power generation by means of block-type thermal power stations or the use of unused potentials (sludge digestion, sewage sludge dewatering etc.).

Preventive maintenance measures are also becoming increasingly important. Early fault detection can prevent unplanned failures and thus avoiding time-consuming and costly repairs. This increases the efficiency and availability of the plant and reduces operating costs. With its products for safe automation, electrical safety and power electronics, DOLD offers a wide range of automation solutions for efficient and resource-saving wastewater treatment.

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Insulation monitor MK 5880N

• According to IEC/EN 61 557-8
• For single and 3-phase AC-systems up to 0 ... 500 V and 10 ... 1000 Hz
• Monitors also disconnected voltage systems
• Adjustable tripping value RALof 5 ... 100 kΩ
• De-energized on trip
• Auxiliary voltage, measuring circuit and output contacts are galvanically separated
• Manual...

Radio controlled safety module UH 6900

• According to
- Performance Level (PL) e and category 4 to EN ISO 13849-1
- SIL Claimed Level (SIL CL) 3 to IEC/EN 62061
- Safety Integrity Level (SIL) 3 to IEC/EN 61508 and IEC/EN 61511
• Machine directive 2006/42/EG
• DIN EN 574: Safety of machinery - Two-hand control devices -
• DIN EN 300 220: Electromagnetic compatibility and...

Smart motorstarter UG 9410

• According to IEC/EN 60 947-4-2
• Modbus RTU-interface
• To reverse 3 phase motors up to 0.18 kW ... 2.2 kW at 400 V
• 2-phase softstart, softstop
• 3 potentiometer for setting the modbus adress and baud rate
• 5 LEDs for status indication
• Reversing with relays without current, softstart, softstop with thyristor
•...

Control unit UG 6911.10

• Monitoring of opto electronical sensors, light curtains, magnetic
actuated sensors, E-stop buttons, safety mats, mechanical switches,
two-hand control
• 8 safety, single-channel inputs, dual-channel connection in pairs
• 2 safety, dual-channel outputs (OSSD)
• 4 separate test outputs for sensor monitoring
• 1 Feedback circuit...

Residual current transformer ND 5015

• The residual current transformer ND 5015 is designed for
DIN rail mounting or screw-type mounting
• Mounting on the top-hat rail may be done horizontally or vertically

Radio controlled safety module BI 6910

• According to
- Performance Level (PL) e and category 4 to EN ISO 13849-1: 2008
- Safety Integrity Level (SIL 3) to IEC/EN 61508
• Safety radio transmission
• Radio receiver for:
- Radio controlled enabling switch
- Control signals for 6 non-safety semiconductor outputs
• Multifunction safety modul with additional control input to...

Radio controlled safety module BI 5910

• According to
- Performance Level (PL) e and category 4 to EN ISO 13849-1: 2008
- Safety Integrity Level (SIL 3) to IEC/EN 61508
- Category 4 to EN 954-1
• Safety radio transmission
• Radio receiver for:
- E-stop
- Control signals for 6 non-safety semiconductor outputs
• Multifunction safety modul with additional control input to...

Mechanical guard lock with separat actuator STS-M10A

The unit is particularly suitable for applications with:
• Partial body access (no lock-in danger)
• Basic function with separate actuator
• Several secured entries
• Extremely rugged ambient conditions

Emergency stop module UF 6925

• According to
-- Performance Level (PL) e and category 4 to EN ISO 13849-1
-- SIL Claimed Level (SIL CL) 3 to IEC/EN 62061
-- Safety Integrity Level (SIL) 3 to IEC/EN 61508 and IEC/EN 61511
• According to EN 50156-1 for furnaces
• 2-channel operation
• Forcibly guided output contacts
• With or without cross fault monitoring in...

Smart motorstarter UG 9411

• According to IEC/EN 60 947-4-2
• Modbus RTU-interface
• To reverse 1-phase motors up to 50 ... 180 W or
180 W ... 1.1 kW at 230 V
• 1-phase softstart, softstop
• 3 potentiometer for setting the modbus adress and baud rate
• 5 LEDs for status indication
• Reversing with relays without current, softstart, softstop with...

Radio controlled enabling switch RE 6910

• Radio controlled enabling switch RE 6910 for BI 6910
• with DOLD Wireless Safety System
- Performance Level (PL) e and category 4 to EN ISO 13849-1: 2008
- Safety Integrity Level (SIL 3) to IEC/EN 61508
• Safety radio transmission
• User friendly, compact enabling switch for
radio controlled safety modul BI 6910
• programmable...

Remote control for E-Stop RE 5910

• Remote control RE 5910 for BI 5910
• with DOLD Wireless Safety System
- Performance Level (PL) e and category 4 to EN ISO 13849-1: 2008
- Safety Integrity Level (SIL 3) to IEC/EN 61508
- Category 4 to EN 954-1
- DIN EN ISO 13850
• Safety radio transmission
• User friendly, compact transmitter
- for radio controlled safety modul BI...

Residual current monitor, Type B RN 5883

• According to IEC/EN 62 020, VDE 0663
• For AC and DC systems Type B
• To detect earth faults in grounded voltage systems
• 4 setting ranges from 10 mA to 3 A
• Manual reset, with alarm and pre-warning
• With adjustable switching delay
• Energized or de-energized on trip
• LED indicator for operation, pre-alarm and...

Smart motorstarter UG 9256

• According to IEC/EN 60 947-4-2
• To reverse 3 phase motors from 90 W to 750 W resp. 550 W to 4 kW
at AC 400 V
• 2-phase softstart
• Max. 4 potentiometer für setting of starting torque, deceleration torque,
softstart /-stop, overcurrent limit or rated motor current
• 4 LEDs for status indication
• Reversing with relays...

Motor load monitor MK 9397N

• According to EN 60255-1
• Active power measuring
• Relay output
MK 9397N: 1 changeover contact
MH 9397: 1 changeover contact each for overload and prewarning
• On delay
• Closed circuit operation
• As option open circuit operation
• As option with plugable terminal blocks for easy exchange
of devices
- with screw...

Speed monitor UH 6932

• According to
- Performance Level (PL) e und category 4 to EN ISO 13849-1
- SIL-Claimed Level (SIL CL) 3 to IEC/EN 62061
- Safety Integrity Level (SIL 3) to IEC/EN 61508
- Safety Integrity Level (SIL) 3 to IEC/EN 61511
• Overspeed, underspeed or window monitoring
• Integrated user friendly frontside display
- Comfortable, menu guided...

Speed and frequency monitor UH 6937

• According to
- Performance Level (PL) e und category 4 to EN ISO 13849-1
- SIL-Claimed Level (SIL CL) 3 to IEC/EN 62061
- Safety Integrity Level (SIL 3) to IEC/EN 61508
- Safety Integrity Level (SIL) 3 to IEC/EN 61511
• Over-, underfrequency or window monitoring of single or
3-phase in AC systems
• Integrated user friendly frontside...

Hybrid relay IK 3070/200

• According to IEC/EN 60 947-4-3
• Measured nominal current 20 A
• High electric life of >10⁶ switching cycles at AC 15
10 A inductive
• Silent switching
• To switch resistive, inductive and capacitive loads
• Switching at zero-crossing
• 1 NO contact
• 17.5 mm width

Insulation monitor MH 5880

• According to IEC/EN 61 557-8
• For single and 3-phase AC-systems up to 0 ... 500 V and 10 ... 1000 Hz
• Monitors also disconnected voltage systems
• Adjustable tripping value RALof 5 ... 100 kΩ
• De-energized on trip
• Auxiliary voltage, measuring circuit and output contacts are galvanically separated
• Manual...

Softstarter and softstop device GF 9016

• For soft and shockfree start of your asynchronous motors
• Less wearing and longer life for your motors and components
• Space saving and easy fitting
• Reduce load from supply mains by reducing of starting current
• According to IEC/EN 60 947-4-2
• Softstart with softstop
• For motors up to 22 kW
• 2-phase...

Emergency stop module with voltage failure detection BH 5903

• According to
- Performance Level (PL) e and category 4 to EN ISO 13849-1: 2008
- SIL Claimed Level (SIL CL) 3 to IEC/EN 62061
- Safety Integrity Level (SIL 3) to IEC/EN 61508
- Category 4 to EN 954-1
• E-stop with latching function
• Automatic start when voltage returns after phase failure
when no E-Stop was operated before phase failure.
•...

Softstarter PF 9015

• According to IEC/EN 60 947-4-2
• Suitable for IE3-motors
• 3-phase controlled with integrated bypass relays
• Phase sequence, under- and overvoltage monitoring
• Blocked motor monitoring in bypass mode
• Integrated motor protection to class 10 acc. to IEC/EN 60947-4-2
• Starting current limitation
• Thyristor...

Thermistor Motor Protection Relay MK 9163N ATEX

• According to EN 60947-5-1, EN 60947-8, EN 60079-14, EN 61508,
EN 50495, EN 13849
• Monitioring of
- overtemperature
- broken wire detection in sensor circuit
- short circuit detection in sensor circuit
• 1 input for 1 to 6 PTC-resistors
• De-energized on trip
• LED-indicator for
- auxiliary supply
- state of contact
• Output...

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