Festo CMSH
Valve positioner

Festo CMSH
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Item Number: CMSH
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Festo Valve positioner.

CMSH Datasheet:

DesignDigital, electropneumatic positioner
Mode of operationDouble-actingSingle-acting
Design characteristicsSafety position - pneumatic outlets closedSafety pneumatic output 2 exhaustedSafety pneumatic output 4 pressurised
Mounting positionoptional
Type of mountingWith accessoriesTo VDI/VDE 3845To VDI/VDE 3847-2
Functional principle of measuring systemPotentiometerExternal
Sensing range0 deg ... 115 deg
DisplayLCD display, via software 90° rotatable
Setting optionsVia display and keys
Cycle time20 ms
Nominal altitude of use<= 2000="" m="" nhn="" td="">
ATEX category gasII (1) 2GII 2G
Explosion ignition protection type for gasEx ia [ia Ga] IIC T4/T6 GbEx ib IIC T4/T6 Gb
ATEX category dustII (1) 2DII 2D
Explosion ignition protection type for dustEx ia [ia Ga] IIIC T130°C DbEx ia [ia Ga] IIIC T85°C DbEx ib IIIC T130°C GbEx ib IIIC T85°C Gb
Explosion ambient temperatureT4: -40 °C <= ta="" 80="" ct6:="" -40="" c="" 50="" td="">
Certificate issuing authorityBVS 23 ATEX E004IECEx BVS 23.0001
Max. intrinsically safe circuit input parameterSee IECEx certificateSee ATEX certificate
Max. input power PiSee ATEX certificateSee IECEx certificate
Max. input voltage UiSee ATEX certificateSee IECEx certificate
Max. input current IiSee ATEX certificateSee IECEx certificate
Effective internal capacitance CiSee ATEX certificateSee IECEx certificate
Effective internal inductivity LiSee ATEX certificateSee IECEx certificate
Overvoltage categoryII
Operating pressure0.14 MPa ... 0.8 MPa
Operating pressure1.4 bar ... 8 bar
Operating pressure20.3 psi ... 116 psi
Operating mediumCompressed air to ISO 8573-1:2010 [7:4:4]
Note on operating and pilot mediumLubricated operation not possible
Air flow rate at О”p = 6 bar270 l/min ... 380 l/min
Note on air flow rateDepending on additional specific accessories
Pneumatic connectionG1/41/4 NPT
Pressure gauge connectionG1/81/8 NPT
Reverse polarity protectionyes
Connection resistance3 kOhm ... 80 kOhm
digital input, signal range4 - 20 mA with HART
Analogue inputs, input impedance480 ohm at 20 mA
Analog inputs, overload protection<65 ma="" td="">
Analogue inputs, electrical isolationyes
digital output, signal range4 - 20 mA
Analogue outputs, functional principleRegulated power source with external supply
Analogue outputs, supply voltage24 V
Analogue outputs, reverse polarity protectionyes
Analog outputs, short circuit current ratingyes
Analog outputs, overload protectionyes
Analogue outputs, galvanic isolationyes
Characteristic for inputs1x to IEC 61131-2, type 32x to IEC 61131-2, type 3
Digital inputs, reverse polarity protectionyes
Digital inputs, electrical isolationyes
Digital inputs, overload protection33 V
Switching output2x to IEC 60947-5-6 or 2x to DIN EN 61131-2 type 2, switchable
Digital outputs, supply voltage8.2 V24 V
Digital outputs, short circuit current ratingyes
Digital outputs, overload protectionYes, <30 v="" td="">
Digital outputs, electrical isolationyes
Electrical connection 1, functionAnalogue inputDigital inputExternal path/angle sensor
Electrical connection 1, connection typeTerminal strip
Electrical connection 1, connector systemSpring-loaded terminal
Electrical connection 1, number of connections/cores7
Electrical connection 2, function2x digital outputAnalogue outputDigital input
Electrical connection 2, connection typeTerminal strip
Electrical connection 2, connector systemSpring-loaded terminal
Electrical connection 2, number of connections/cores8
Cable fitting2x 1/2 NPT2x M20x1.5
Max. cable length30 m for external position sensorShielded
Ambient temperature-40 °C ... 80 °C
Note on ambient temperatureDisplay: -30 - 80°C
Storage temperature-40 °C ... 80 °C
Climatic category1K5 to EN 60721 for storage4K3 to EN 60721 for operation
Degree of protectionIP66IP67
Shock resistanceShock test with severity level 1 to FN 942017-5 and EN 60068-2-27
Vibration resistanceTransport application test with severity level 2 to FN 942017-4 and EN 60068-2-6
Pollution degree3
ApprovalRCM trademark
CE mark (see declaration of conformity)To EU EMC DirectiveTo EU Explosion Protection Directive (ATEX)In accordance with EU RoHS Directive
CE marking (see declaration of conformity)To UK instructions for EMCTo UK EX instructionsTo UK RoHS instructions
Explosion protection certification outside the EUEPL Gb (GB)EPL Gb (IECEx)
Material housingAluminium, powder-coated
Material screenPC
Material shaftHigh-alloy stainless steel
Material couplingHigh-alloy stainless steel
Material screwsHigh-alloy stainless steel
Material sealsEPDMNBRVMQ
LABS (PWIS) conformityVDMA24364 zone III
Note on materialsRoHS-compliant
Product weight2055 g ... 2820 g

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