IDEC EU2B Flameproof and Increased Safety Control Units Instruction Manual

IDEC EU2B Flameproof and Increased Safety Control Units Instruction Manual

Safety Precautions

In this operation instruction manual, safety precautions are categorized in order of importance to Warning and Caution:

WARNING:

Warning notices are used to emphasize that improper operation may cause severe personal injury or death.

CAUTION:

Caution notices are used where inattention might cause personal injury or damage to equipment.

WARNING:

(General requirements)

• Use the EU2B control units that are applicable for use in hazardous areas, otherwise explosion or fire hazard may result. (Hazardous area: potentially explosive atmosphere\ where explosive gas or vapor may exist) Because the EU2B control unit is a Ex component, it cannot be be used as an explosion-proof equipment on its own. To use the EU2B control units in Japan, it should be certifified by TIIS (Technology Institution of Industrial Safety) as a finished product.
• EU2B control units can be installed only in zones 1 and 2. Do not use in zone 0.
• Turn power off to the EU2B control units before installation, removal, wiring, maintenance, or inspection, otherwise explosion, fire hazard, or electric shock may result.
• Special expertise is required to install, wire, operate, maintain, and inspect the EU2B control units. People without such expertise must not use the EU2B control units, otherwise damage or accident may result
• Do not disassemble, repair, or modify the EU2B control units, otherwise damage or accident may result.
• Do not use a damaged the EU2B control units, otherwise damage or accident may result.

(Wiring and operation)

• When connecting with external devices, make sure that each cable is connected to the correct terminal, otherwise electric shock, fire hazard, or explosion may result.
• Use wires of a proper size to meet voltage and current requirements. Tighten the M3.5 terminal screws to a tightening torque of 1.0 to 1.3 N᳽m. Incorrect wiring may cause abnormal temperature rise and lead to fire hazard and explosion.
• Operate the EU2B control units under the rated current and voltage specified in this instruction manual, otherwise short-circuiting, fire hazard, or explosion may result.

(Maintenance and inspection)

• When measuring the insulation resistance of the control units, make sure that potentially explosive atmosphere of explosive gas or vapor does not exist in the vicinity, otherwise explosion or fire hazard may result. Do not touch the terminal carelessly. Otherwise, electric shock may result.

CAUTION:

(General requirements)

• The EU2B control units are exclusively designed for the EC2B flameproof and increased safety control box. When using the EU2B control units for other purposes, make sure that the operating conditions are appropriate.
• When using the emergency stop switch for safety-related equipment in a control system, to make sure of correct operation, refer to the safety standards and regulations in each country and region depending on the application purpose of the actual machines and installations. Before using the emergency stop switch, perform risk assessment to make sure of safety.

(Opening the shipping carton)

• Check that the product is what you have ordered. Using an incorrect model might result in malfunction or accident.

(Installation)

• Read this instruction manual to make sure of correct installation of the EU2B control units. Install the EU2B control units without getting in the substances such as dust, concrete powder,  or metal powder, otherwise contact failure or insulation failure may result.

（Operation)

• Stop operation immediately if abnormal operation occurs. Otherwise, a secondary accident may occur.

（Maintenance and inspection)

• The surface temperature of the EU2B control units may become extremely high during operation. Before maintenance or inspection of the EU2B control units, be sure to wear gloves to prevent burn on your hand.

Type Numbers

Product Specifications

1. General Specifications
   Applicable Standards| IEC/EN 60079-0, IEC/EN 60079-1, IEC/EN 60079-7IEC/EN 61241-0, IEC/EN 61241-1, IEC/EN 60079-31IEC/EN 60947-1, IEC/EN 60947-5-1IEC/EN 60947-5-5 (Emergency stop switch)IEC/EN 60051-1, IEC/EN 60051-2, IEC/EN 60051-9(Meter）
   ---|---
   Explosion protection
   Group and category|  II2GD
   Type of Explosion protection| Ex de IIC,  Ex tD A21 IP65Ex de IIC Gb,  Ex tb IIIC Db IP65(Meter)
   Test certificated| PTB 08 ATEX 1053 U / PTB 08 ATEX 1003 U / PTBATEX**U
   Degree of protection (IEC/EN 60529)
   From panel front| IP65
   Terminal| IP20 (EU2B-YF), None (EU2B-YC)
   Standard operating environment
   Ambient temperature| -20 to +50℃ (no freezing)
   Relative humidity| 45 to 85%RH (no condensation)
   Altitude| 2,000m maximum
   Pollution degree| 3
   Shock resistance| Operating extremes| 100 m/s2, Emergency stop switch: 150 m/s2 (Without Meter)
   Damage limits| 1,000 m/s2
   Vibration resistance| Operating extremes| 5 to 55 Hz, amplitude 0.5 mm Emergency stop switch:5 to 500 Hz, amplitude 0.35 mm, acceleration 50 m/s2(Without Meter)
   Damage limits| 30 Hz, amplitude 1.5 mm Emergency stop switch:5 to 500 Hz, amplitude 0.35 mm, acceleration 50 m/s2
2. Pushbutton swtich, Selecter switch, Key selecter switch and Emergency stop switch (Type EU2B-YB/ EU2B-YS/ EU2B-YSK/ EU2B-YBV)
   Contact RatingRated Insulation Voltage (Ui)| 600V
   ---|---
   Thermal Current (Ith)| 10A
   Rated Operating Voltage(Ue)| 24V| 120V| 240V| 500V
   Rated Operating Current(Ie)| AC50/60Hz| Resistive load (AC12)| 10A()| 10A()| 6A| 2.8A
   Inductive load (AC15)| 10A(*)| 6A| 3A| 1.4A
   DC| Resistive load (DC12)| 8A| 2.2A| 1.1A| –
   Inductive load (DC13)| 4A| 1.1A| 0.55A| –

*)10A (< 2 contact blocks by one control unit), 9A (= 3 contact blocks by one control unit)
Minimum switching capacity : 5 mA at 3V AC/DC (applicable range may vary with operating conditions and load types)
Specifications

Selecter switch          : 500,000 operations minimum
Key selecter switch : 500,000 operations minimum
Emergency stop switch : 50,000 operations minimum
Electrical Life| Pushbutton swtich : 250,000 operations minimum

(Operating Frequency : 1,800 operations/hour)

Selecter switch          : 250,000 operations minimum

(Operating Frequency : 900 operations/hour)

Key selecter switch : 250,000 operations minimum

(Operating Frequency : 900 operations/hour)

Emergency stop switch : 50,000 operations minimum

(Operating Frequency : 900 operations/hour)

Contact block| 3 contacts maximum.
Short-circuit Protective Device| 250V/10A fuse (Type aM IEC60269-1/IEC6026-9-2)
Conditional Short-circuit Current| 1000A
Minimum Direct Opening Force| Emergency stop switch: 60 N
Minimum Direct Opening Travel| Emergency stop switch: 7.0 mm
Maximum Travel| Emergency stop switch: 9.0 mm
Weight (approx.)| EU2B-YB111C : 92g, EU2B-YS211C : 98g EU2B-YSK211C : 120g, EU2B-YBV302C : 120g

Notes for Operation
Contact bouncing When the control unit is operating, the contacts will bounce. When designing a control circuit, take the contact bounce time into consideration (reference value: 20 ms).

3. Pilot Light (Type EU2B-YL)
   Rated insulation voltage (Ui)| 500 V
   ---|---
   Rated Operating Voltage (Ue)| AC/DC 6, 12, 24V (Full voltage type)
   AC 100/110, 115, 120, 200/220, 230, 240, 380, 400/440, 480V (Transformer type)
   Impulse Withstand Voltage (Uimp)| 4kV
   Insulation Resistance| 100 M € minimum (500V DC megger)
   Light source| LED lamp (Type LSTD by IDEC)
   Colors| Amber, Blue, Green, Pure White, Red, White, Yellow
   Frequency (AC)| 50/60 Hz
   Rated Power Consumption (approx.)| 0.3W (Full voltage type), 1.5VA (Transformer type)
   life (reference value)| Applox 40,000 hours
   Weight (approx.)| 108g (Full voltage type), 150g (Transformer type)

Notes for Operation
The LED built-in lamp is super bright type. Note that the LED lamp may turn on even when the power is turned off because of induction.
IDEC does not guarantee exchange of an LED lamp, because it will affect explosion protection characteristics. Call IDEC when you need to replace LED lamps.

4. Meter(EU2B-YM)
   Accuracy Class| 2.5
   ---|---
   Insulation Resistance| 100MΩ　minimum(500V DC megger)
   AC ammeter| Rated Insulation Voltage(Ui)| 300V
   Principle of action| Moving-iron instrument
   Impulse Withstand Voltage(Uimp)| 4kV
   Power Consumption| 1VA
   Specification of Measuring Range| 5A, 10A, 30A, 50A etc
   Specification of Input Current| 1A, 5A
   Specification of Overload Scale| 3 times etc
   DC ammeter DC voltmeter| Rated Insulation Voltage(Ui)| 150V
   Principle of action| Permanent-magnet moving -coil instrumen
   Impulse Withstand Voltage(Uimp)| 2.5kV
   Specification of Input: DC ammeter
   DC voltmeter| 0 to 1mA DC, 4 to 20mA DC etc.
   0 to 10V DC etc
   Power Consumption| 0.15W max.
   Weight(approx.)| 270g

Notes for Operation

  * For AC ammeter of measuring range of 10A or avobe, use a current transformer commercially available. Install the current transformer in the non-hazardous area.
  * Terminal polarity of meter.  

Note that the upper terminal is positive (No.1) and the lower terminal is negative (No.2) when installed on the control box.

  * Zero-setting the pointer and setting the set pointer Using a flat screwdriver with the tip of 0.8t×5w or smaller, adjust the pointer and the set pointer by turning the shafts as shown at the right. Do not apply excessive force on the shaft, otherwise the shaft will be damaged.
  * DC voltmeter and DC ammeter do not require zero adjustment.  

Arrangement and Mounting

1. Dimension
   
   

2. Parts Description
   

3. Panel thickness/ Mounting hole layout

4. Panel thickness: 1.0 to 4.5 mm
   Mounting hole layout: See the right figures. (*)The meter can be mounted on the top mounting holes of the standard 50mm mounting centers. The meter can be mounted on any mounting hole with the 70mm or larger mounting center.

5. Panel mounting
   To remove the contact unit (for pilot lights, remove the lamp unit) from the operator (or lens unit). To remove the locking ring from the operator. To insert  the operator into the panel cut-out from the front, tighten the locking ring from the back, then install the contact unit to the operator.
   
   To remove the contact unit or the lamp unit from the operator, pull the protruding part of the locking lever outwards as shown in the diagram (using a screwdriver etc.) and turn it to the left. The contact unit or lamp unit can be pulled out.
   
   Note: When the contact unit is removed from the emergency stop switch operator, the NO contact closes and the NC contact opens. Do not turn the locking lever when the contact unit is removed from the operator (the red indicator is protruding out. See the figure on the right). Otherwise, the switch may be damaged.
   
   To remove the locking ring from the operator and check that the rubber gasket is in place. To insert the operator from panel front into the panel hole. To place the projection on the operator with TOP marking and the recess on the mounting panel in the same direction. ( The meter has no projection.)
   And tighten the locking ring using ring wrench
   XN9Z-T1 to a torque of 2.5 N᳽m. When using a nameplate or padlocking cover, install it between the operator and panel. Make sure that the groove of the namplate or padlocking cover, and the projection on the TOP marking of the operator is in the same direction.
   Note: The locking ring for emergency stop switches and meter is metallic. The meter can’t mount the nameplate or podlocking cover
   
   To install the contact unit, place theTOP marking on the operator and the TOP marking on the contact block adapter in the same direction, and then attach the contact unit to the operator. Then turn the locking lever to the right. Follow the same procedure when installing the lamp unit.
   
   Note: When installing the lamp unit, check that the inner lens is not loose.
   Note: The contact block adapters for emergency stop switches cannot be used for pushbutton, selector and key selector switches.

   To remove the contact block, insert a flat screwdriver under the latch of the contact block adapter and disengage the latch. (See the figure below) **Note:** When reinstalling the contact block after maintenance or wiring, make sure that the contact configuration is correct. Installing the contact block in the incorrect position or incomplete installation may cause malfunction of the switch.