Schischek ExMax BF - User Manual

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ExMax - ... - BF

ExMax - ... - CTM

ExMax - ... - VAM

www.schischek.com

Schischek GmbH Germany, Muehlsteig 45, Gewerbegebiet Sued 5, 90579 Langenzenn, Tel. +49 9101 9081-0, Fax +49 9101 9081-77, E-Mail info-de@schischek.com

ExMax-M-BF_en

V04 – 14-Jan-2019

Subject to change!

Compact. Easy installation. Universal. Cost effective. Safe.

Product views and applications

Description Highlights

Fire damper Ball valve Throttle valve

Electrical, explosion proof rotary actuators with

integrated Ex-i tripping circuit for safety temperature trigger ExPro-TT

On-off / 3-pos. control mode, 24…240 VAC/DC, 95° angle of rotation incl. 5° pretension

30 – 50 – 60 Nm with safety operation (spring return)

ATEX tested in acc. with directive 2014/34/EU for zone 1, 2, 21, 22

Type Torque Supply Motor running time Spring return Control mode Feedback Wiring diagram

ExMax- 30 - BF 30 Nm 24...240 VAC/DC 40 / 60 / 90 / 120 / 150 s/90° ~ 20 s/90° On-off, 3-pos. 2 × aux. switches + Ex-i tripping circuit SB 7.2/7.3

ExMax- 50 - BF 50 Nm 24...240 VAC/DC 40 / 60 / 90 / 120 / 150 s/90° ~ 20 s/90° On-off, 3-pos. 2 × aux. switches + Ex-i tripping circuit SB 7.2/7.3

ExMax- 60 - BF 60 Nm 24...240 VAC/DC 40 / 60 / 90 / 120 s/90° ~ 20 s/90° On-off, 3-pos. 2 × aux. switches + Ex-i tripping circuit SB 7.2/7.3

ExMax- ... - CTM Types as above with aluminium housing and seawater resistant coating (cable glands brass nickel-plated)

ExMax- ... - VAM Types as above with stainless steel housing for aggressive ambient (cable glands brass nickel-plated)

ExMax ¼ turn actuators – size M

► For all types of gases, mists, vapours and dusts in zones 1, 2, 21 and 22

► Universal supply unit from 24…240 VAC/DC

►Motor running times 40– 60– 90–120–150 s/90° adjustable on site

► On-off and 3-pos. control with spring return function, running time ~ 20 s/90°

► Ex-i circuit for direct connection of the ...Pro-TT-... safety temperature trigger

► 2 integrated auxiliary switches, switching at 5° and 85° angle of rotation

► 30– 50–60 Nm actuators in the same housing size

► 100 % overload protected

► Compact design and small dimension (L × W × H ~ 288 × 149 × 116 mm)

► Direct coupling to the damper shaft with double square connection 16 × 16 mm

► 95° angle of rotation inclusive 5° pretension

► Robust aluminium housing (optional with seawater resistant coating)

or in stainless steel

► IP67 protection

► Simple manual override included + preparation for comfortable manual override

► Gear made of stainless steel and sinter metal

► Weight only ~ 9,5 kg

► Integrated heater for ambient temperatures down to −40 °C

► Integrated safety temperature sensor

► Integrated equipment for manual adjustment (push button, lamp, switch)

► Preparation for adaptable and adjustable auxiliary switches type ...Switch

The ExMax actuators are a revolution for safety, fire and shut-off dampers,

VAV systems, ball valves, throttle valves and other motorized applications

for HVAC systems in chemical, pharmaceutical, industrial and offshore/onshore

plants, for use in Ex-areas zone 1, 2 (gas) and zone 21, 22 (dust).

Highest protection class (ATEX) and IP67 protection, small dimensions,

only 9,5 kg weight, universal functions and technical data, an integrated

heater and an optional stainless steel housing guarantee safe operation

even under difficult environmental conditions. High quality brushless

motors guarantee long life.

All actuators are programmable and adjustable on site. Special tools or

equipment are not required. Motor running times are selectable or

adjustable on site. The integrated universal power supply is self adaptable

to input voltages in the range of 24...240 VAC/DC. The actuators are

100 % overload protected.

...Max-...-BF actuators are equipped with spring return fail safe function,

with 2 integrated auxiliary switches for end position indication and an

intrinsically safe tripping circuit for connecting the ...Pro-TT-... safety

temperature trigger. Standard shaft connection is a double square direct

coupling with 16 × 16 mm.

Different accessories are available to adapt auxiliary switches, terminal

boxes or adaptions for ball valves and throttle valves and other armatures.

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Need help?

Do you have a question about the Schischek ExMax BF and is the answer not in the manual?

The device described in the manual is an ExMax ¼ turn actuator, designed for use in potentially explosive atmospheres. These actuators are suitable for a wide range of applications, including HVAC systems in chemical, pharmaceutical, industrial, and offshore/onshore facilities, as well as in zones 1, 2, 21, and 22.

Function Description

The ExMax actuators are explosion-proof rotary fail-safe devices that provide precise control in hazardous environments. They are equipped with an integrated ExPro-TT temperature trigger for safety temperature control. This feature ensures that the actuator operates within safe temperature limits, preventing overheating and potential hazards. The actuators are designed to perform ¼ turn (90°) operations, making them suitable for controlling dampers, ball valves, and butterfly valves.

They offer various control options, including:

On-off/3-pos. control circuit: This allows for simple open/close or three-position control (open-mid-close).
Spring return: Ensures that the actuator returns to a predefined safe position (e.g., fully open or fully closed) in case of power failure.
Integrated auxiliary switches: These provide feedback on the actuator's position, allowing for remote monitoring and control.
Safety temperature trigger ExPro-TT: This integrated safety feature monitors the temperature of the actuator and, if it exceeds a set limit, triggers a safety shutdown or alarm.
Integrated manual override: Allows for manual operation of the actuator in case of power failure or for maintenance purposes.

The actuators are available in different torque ratings (30 Nm, 50 Nm, 60 Nm) and running times, offering flexibility for various applications. They can be configured for different supply voltages (24 VAC/DC, 120 VAC/DC, 240 VAC/DC).

Important Technical Specifications

General:

Explosion Protection: ATEX certified for zones 1, 2, 21, 22.
Housing: Robust aluminum housing with seawater resistant coating or stainless steel.
Protection Class: IP66 (IP67 on request).
Ambient Temperature: -40 °C to +50 °C (up to +60 °C for ExMax-BF, -40 °C to +40 °C for ExMax-BF with temperature trigger).
Dimensions (L x W x H): Varies by model, e.g., 288 x 149 x 116 mm for ExMax-30/50/60.
Weight: Approximately 4.5 kg (depending on model and configuration).

Electrical:

Supply Voltage: 24 VAC/DC, 120 VAC/DC, 240 VAC/DC.
Power Consumption: Varies by model and operation mode, e.g., 5 W holding power, approx. 16 W for heater.
Running Times:
- ExMax-30: 30 Nm, 40/60/90/120/150 s/90°.
- ExMax-50: 50 Nm, 40/60/90/120/150 s/90°.
- ExMax-60: 60 Nm, 40/60/90/120/150 s/90°.
Cable Glands: M20 x 1.5.
Electrical Connection: Terminal box with screw terminals for easy wiring.

Control Options:

On-off/3-pos. control circuit: For simple open/close or three-position control.
Spring Return: Returns to a safe position upon power failure.
Auxiliary Switches: Integrated, adjustable switches for position feedback (e.g., 2 x SPDT, 10 A at 250 V AC).
Safety Temperature Trigger ExPro-TT: Monitors internal temperature and triggers a safety response if limits are exceeded.
Manual Override: Crank handle or lever for manual operation.

Usage Features

Easy Installation and Commissioning:

Universal Supply Voltage: The actuators are designed to work with a wide range of supply voltages, simplifying installation.
Adjustable Running Times: The running time can be adjusted on-site, allowing for fine-tuning to specific application requirements.
Simple Mounting: The actuators can be easily mounted on dampers, ball valves, and butterfly valves using standard mounting brackets.
Visual Position Indicator: A clear position indicator allows for easy visual verification of the actuator's status.
Integrated Auxiliary Switches: These switches are easily adjustable, providing flexible feedback options.
Manual Override: A simple manual override mechanism allows for operation during power outages or for maintenance.
Pre-wired Connection: The actuators come with pre-wired connections, reducing installation time and complexity.

Robust and Reliable Operation:

Explosion-Proof Design: Certified for hazardous areas, ensuring safe operation in potentially explosive atmospheres.
High Protection Class (IP66/67): Provides excellent protection against dust and water ingress, making them suitable for harsh environments.
Corrosion Resistance: Available with seawater resistant coating or stainless steel housing for enhanced durability in corrosive environments.
Integrated Safety Features: The ExPro-TT temperature trigger and spring return function enhance safety and reliability.
Wide Temperature Range: Designed to operate reliably across a broad range of ambient temperatures.

Versatile Applications:

Dampers: Ideal for controlling air dampers in HVAC systems.
Ball Valves: Suitable for regulating fluid flow in pipelines.
Butterfly Valves: Used for on-off or modulating control of flow.
Fire Dampers: Specific models (ExMax-BF and RedMax-BF) are designed for fire damper applications, integrating with fire alarm systems.

Maintenance Features

Minimal Maintenance Requirements:

Durable Design: The robust construction and high-quality materials minimize the need for frequent maintenance.
Self-Lubricating Gears: The gear train is designed for long-term, maintenance-free operation.
Easy Troubleshooting: The manual provides detailed troubleshooting guides and error codes to help identify and resolve issues quickly.
Modular Design: Components are designed for easy replacement, simplifying repairs if necessary.

Diagnostic and Monitoring:

LED Indicators: Provide visual feedback on the actuator's status and potential errors (e.g., power, fault).
Auxiliary Switches: Can be used to monitor the actuator's position remotely, allowing for proactive maintenance and fault detection.
Temperature Trigger (ExPro-TT): Continuously monitors the internal temperature, providing an early warning of potential overheating issues.

Service and Support:

Comprehensive Manual: The manual provides detailed instructions for installation, operation, maintenance, and troubleshooting.
Technical Support: Information for contacting technical support is provided, ensuring assistance is available when needed.
Spare Parts Availability: Information on available spare parts and accessories is included, facilitating repairs and upgrades.

Specific Maintenance Procedures:

Regular Visual Inspection: Periodically check the actuator for any visible damage, corrosion, or loose connections.
Cleaning: Keep the actuator clean, especially the position indicator and cable glands, to ensure proper operation.
Functional Testing: Periodically test the actuator's functionality, including the spring return and auxiliary switches, to ensure they are operating correctly.
Checking Electrical Connections: Ensure all electrical connections are secure and free from corrosion.
Temperature Monitoring: For actuators with ExPro-TT, regularly check the temperature readings if available, or ensure the safety function is active.

By adhering to the guidelines provided in the manual, users can ensure the safe, reliable, and long-lasting operation of their ExMax ¼ turn actuators in hazardous environments.