Watts valpes VRA Mode D'emploi page 12

Description
Electric actuators, aluminium housing and polyamide UL94V0 or aluminium (option) cover with manual override by external
shaft or hand wheel, for torques from 25 to 300Nm and in accordance with CE-ROHS-REACH
VRA • VSA technical datas
Visual position indicator
Control
Voltages
Duty cycle
Torque limiter
Number of starts / hour 2)
Feedback relay
Anti-condensation heater
Drive nut
Removable adaptation plates (ISO5211)
Number of limit switches
Secured manual override
Mechanical travel stops
Electric connection
Temperature
Enclosure
Weight
Warranty
3)
Recommended use, see instructions notice.
2)
3) Tested on testing bench in the worst conditions (maximal torque and duty rating).
Options
Card with two extra limit switches (EFC.2)
100 / 1000 / 5000 / 10000 Ohms feedback potentiometer (EPR.B)
0-10V, 0-20mA or 4-20mA transmitter (EPT.C)
1 or 2 connector M12 3P+T (ECM.1 or ECM.2)
4) Specify the model.
Please consider 1.5 safety factor (and 2.0 safety factor for POSI version) when sizing the actuator
Version
VRA • VSA standard
VRA • VSA avec bloc de sécurité FAILSAFE
VRA • VSA avec système de positionnement
Version VRA • VSA • VTX pour toute application dite
« marine » : revêtement haute durabilité garanti 15 ans
Commande par impulsions (500ms)
Applications avec vibrations
Sur demande.
1)
Modular (VRA) et spherical (VSA)
On-Off or 3-modulating points
100V to 240V AC (50/60Hz) & 125V to 320V DC • 24V AC (50/60Hz) & 24V DC
Service S4 - 80% (IEC34 standard)
Electronical
150
Failure (torque)
Self-regulated
Star
VRA: F05-F07 • VSA: F07-F10
4 adjustable switches (5A max.)
Declutching system and external shaft (VRA) • wheel (VSA)
90° (180° et 270° versions without mechanical travel stops)
2 x 1/2'' NPT
-20°C à +60°C (FAILSAFE actuators: -10°C to +40°C)
IP67
VR: 4Kg to 4,4Kg • VS: 6Kg to 6,4Kg
3-year warranty or 50 000 actuations
4)
Directives.
VRA • VSA
1)
1)
CSA (C,US) / ANSI/UL
CSA C22.2 N°139 / ANSI/UL 429
Page /
Ref. externe
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