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www.schischek.com

Schischek GmbH Germany, Mühlsteig 45, Gewerbegebiet Süd 5, 90579 Langenzenn, Tel. +49 (0)9101 9081-0, Fax +49 (0)9101 9081-77, E-Mail [email protected]

E X P L O S I O N P R O O F

Throttle valve

Damper

Ball valve

ExMax -   50.75

ExMax - 100

ExMax - 150

ExMax -   30 - F

ExMax -   50 - F

ExMax -   60 - F

ExMax -   ...  - S/SF

ExMax -   ...  - CTM

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

Subject to change!

ExMax – ¼ turn actuator

Electrical, explosion proof rotary actuators size M 

On-off / 3-pos , 24…240 VAC/DC,  95° Angle of rotation incl. 5° pretention

50 - 150 Nm without and 30 Nm - 60 Nm with safety operation (spring return)

PTB-tested in acc. with ATEX RL 94/9/EC for zone 1, 2, 21, 22.

  For all type of gas, mixtures, vapours and dust for use in zone 1, 2, 21 and 22

  Universal supply unit from 24 to 240 VAC/DC

  5 different motor running times (40-60-90-120-150 sec./90°), adjustable on site

  2 different spring return running times (20 sec./90°), selectable on site

 On-off and 3-pos control with or without spring return function

  30 - 150 Nm  actuators in the same size (M)

  100 %  overload protected

  Compact design and small dimension  (L × W × H = 286 × 150 × 116 mm)

  Direct coupling to the damper shaft with double-squared connection 16 × 16 mm

 95° Angle of rotation incl. 5° pre-tention

  Robust aluminium housing (optional Amercoat painting) 

 

IP66 protection

  Simple manual override i preparation for comfortable manual override

  Gear made of stainless steel and sinter metal

  Only 9,5 kg weight

  Integral heater for ambient temperatures down to -40°C

  Integral safety temperature sensor 

  Integral equipment for manual adjustment (push button, lamp, switch)

  Preparation for adaptable aux. switches type ExSwitch

  Range of accessories

Type 

Torque 

Supply 

Motor running time  

Spring return 

Control mode 

Feedback    Wiring diagram

ExMax-   50.75    50 Nm & 75 Nm  24..240 VAC/DC  40/60/90/120/150 sec. at 90° 

without 

On-off, 3-pos 

 

   SB 1.0

ExMax- 100 

100 Nm

 

24..240 VAC/DC

 

40/60/90/120/150 sec. at 90° 

without 

On-off, 3-pos 

 

   SB 1.0

ExMax- 150 

150 Nm

 

24..240 VAC/DC

 

40/60/90/120/150 sec. at 90° 

without 

On-off, 3-pos 

 

   SB 1.0

ExMax-   30 - F    30 Nm

 

24..240 VAC/DC

 

40/60/90/120/150 sec. at 90° 

20 sec. at 90° 

On-off, 3-pos 

 

   SB 1.1

ExMax-   50 - F    50 Nm 

24..240 VAC/DC

 

40/60/90/120/120 sec. at 90° 

20 sec. at 90° 

On-off, 3-pos 

 

   SB 1.1

ExMax-   60 - F    60 Nm 

24..240 VAC/DC

 

40/60/90/120/120 sec. at 90° 

20 sec. at 90° 

On-off, 3-pos 

 

   SB 1.1

ExMax- ... - S/SF  Type as above but with 2 integral, potential free aux. switches, switching at 5° and 85° Angle of rotation  max.24 V/1 A, 240 V/0,25 A     

   SB 3.5

ExMax- ... - CTM  Type as above but with aluminium housing and Amercoat paint, gearbox parts in stainless steel, cable gland and hollow rivet nickel-plated

Application

Description size M

The ExMax actuators are a revolution for safety, control and shut-off 
dampers, 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 IP 66 protection, small dimensions, 
only 9,5 kg weight, universal functions and technical data, an integrated 
heater 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 and torques - according 
to the actuator type - selectable or adjustable on site. The integrated 
universal  power supply is self adaptable to input voltages in the range 
of 24 to 240 VAC/DC. 
The actuators are 100% overload protected.
ExMax-...-F actuators are equipped with spring return fail safe function
Standard shaft connection is a double squared direct coupling with 
16 × 16 mm.
Different accessories are available to adapt aux. switches, terminal boxes 
or adaptations for ball valves and  throttle valves.

Highlights

Summary of Contents for ExMax CTM Series

Page 1: ... 90 120 150 sec at 90 without On off 3 pos SB 1 0 ExMax 100 100 Nm 24 240 VAC DC 40 60 90 120 150 sec at 90 without On off 3 pos SB 1 0 ExMax 150 150 Nm 24 240 VAC DC 40 60 90 120 150 sec at 90 without On off 3 pos SB 1 0 ExMax 30 F 30 Nm 24 240 VAC DC 40 60 90 120 150 sec at 90 20 sec at 90 On off 3 pos SB 1 1 ExMax 50 F 50 Nm 24 240 VAC DC 40 60 90 120 120 sec at 90 20 sec at 90 On off 3 pos SB ...

Page 2: ...et wrench slow motion enough torque force is required Attention with manual operation of actuators with spring return danger of injury exists with release let go the socket wrench Integral heater integral heater controlled for ambient temperature down to 40 C Housing material Aluminium die cast housing painted optional in amercoat painted CTM Dimensions L W H 286 150 116 mm for diagramm see extra ...

Page 3: ...en push button T for minimum 3 seconds The actuator will drive into both end positions to be adjusted LED indicates green Adjusmtent time needs approx 180 sec 90 sec On 90 sec Off After that switch S into position 00 09 in acc with your required torque and running time B Selection of running time and torque Put switch S into the correct selected position in acc to above table The selected paramete...

Page 4: ...ature below 20 C See extra information EL M F Excess temperature In acc to the ATEX rules and regulations Ex actuators must be protected against excess temperature An internal thermostat guarantees the temperature class in the event of failure If this thermostat is working the actuator must be sent to the factory ExMax actuators are equipped with an additional temperature sensor to stop the actuat...

Page 5: ...of needed cable cross section A at a cable length of L A 0 0714 l L Uv 18V The EL data sheet contains additional information for ExMax and RedMax actuators of the size M for the optimization and simplification in regard to planning installation and initial startup It provides influences of external factors in reference to the safe initiation of the actuators as well as technical references and pro...

Page 6: ...ors without external torque force min 10 Nm Attention If you use this type of wiring the heater does not work in case of open contact Attention If you use this type of wiring the heater does not work in case of open contact Attention If you use this type of wiring the heater does not work in case of open contact Integrated aux switches max 24 V 3 A 240 V 0 5 A switching at 5 and 85 Supply at aux s...

Page 7: ...y on the clamps 1 and 2 Following parameters are to be considered by ambient temperaure 10 C 1 After mounting the actuator must bei immediately electrically connected 2 The actuator will only be activated after the operating temperature has reached at least 20 C 3 The adjustment options are only ensured after this heating up period IV Mechanical protection 1 The actuator must be operated with an o...

Page 8: ...re remounting on the damper shaft Consider additional information ME M of the assembly instructions A modulating actuator Y works with reduced angle of rotation and already reaches its end positions before 0 V 4 mA respectively before 10V 20mA l At start up no self adjustment of angle of rotation was accomplished l Accomplish self adjustment of angle of rotation in accordance with assembly instruc...

Page 9: ...unting For outdoor installation it has to be certain that the actuator is protected against direct sun exposure warmth and UV rain and snow by employing an enclosure roof Supply voltage is to be applied immediately after mounting in order to assure integrated heating at start Since explosion proof actuators must have internal safety temperature limiters these may not be exposed neither at storage ...

Page 10: ... In case of spring return function the safety postion must be selected by turning the actuator 180 Mounting 1 Affix tap hole M8 in accordance with drill template on the damper or to a mounting bracket 2 Adjust drive shaft of the actuator with the socket wrench that the drive stands perpendicular to the damper before pluging actuator on to the damper shaft 3 Plug actuator onto damper shaft and fix ...

Page 11: ...ten the remaining screws 6 Mount temperatur limiter type ExPro TT InPro TT 7 Mount terminal box 8 Connect sensor on actuator Note the drive shaft is selflockingly produced and may only be mechanically adjusted either with the provided socket wrench or the optional accessory HV M manual override External applied force to the shaft can lead to mechanical damage of the actuator Mounting instructions ...

Page 12: ... Switch 1 Screw mounting bracket MKK M to the actuator A then screw terminal box to the mounting bracket B Mounting bracket MKK M can be mounted every 90 Terminal box mounted above the actuator Terminal box mounted beside the actuator 2 2 B A 4 Mounting of ExSwitch RedSwitch InSwitch accessory to the actuator Mounting of terminal boxes type ExBox RedBox InBox via mounting bracket type MKK M to the...

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