ES-4766 Rev.9
VOS2T-R
Position Sensors
2-WIRE POSITION TRANSMITTER
(rotary motion type; 90 degrees)
Functions & Features
• Detecting rotating angle of a valve actuator or moving positions of other rotating machines and transmitting standard 4 to 20 mA DC proportional to the position
• Light weight and compact design
• High resolution
• Excellent reliability & durability
• Field selectable direct or reverse action
• Rugged enclosure
MODEL: VOS2T–R–[1][2][3][4]
ORDERING INFORMATION
• Code number: VOS2T-R-[1][2][3][4]
Specify a code from below for each of [1] through [4].
(e.g. VOS2T-R-11L0)
• Input angle
Shipped with input angle adjusted as specified.
If not specified it is adjusted to -45 - 45°.
[1] LEVER
0
: None
1
: Effective radius 15 – 40 mm (0.59" – 1.57")
2
: Effective radius 40 – 130 mm (1.57" – 5.12")
3
: Effective radius 35 – 80 mm (1.38" – 3.15")
[2] LEVER POSITION
1
: Upper side
2
: Lower side
[3] RETURN SPRING
0
: None
L
: Counterclockwise return (Seen from the lever side)
R
: Clockwise return (Seen from the lever side)
[4] WIRING CONDUIT
0
: G 1/2
1
: 1/2" NPT fitting
2
: G 1/2 with cable connector
4
: Cables connected (approx. 1 meter or 3.3 ft)
RELATED PRODUCTS
•Link set (model: VOLK)
When using in combination with link set (model: VOLK), specify the module with lever.
GENERAL SPECIFICATIONS
Degree of protection
: IP66
(Screw torque for cover: 1.2 – 1.6 N·m)
Action
: Direct or reverse; field selectable by change of the jumper pins' positions; factory set to direct action
Wiring conduit
: G 1/2
Connection
: M3.5 screw terminals (torque 0.8 N·m)
Materials
Housing
: Cast aluminium
Screw terminals
: Nickel-plated steel
Cable connector
: Nylon 66
(applicable cable's external dia. 6.5 – 8.5 mm)
Lever
: Stainless-steel
Painting color
: Silver
Isolation
: Output to metal housing
Zero adjustment
: -4.5 – +4.5° of input angle
The Zero indicates such input angle where the transmitter outputs 12 mA.
Span adjustment
: 45 – 90° of input angle
The Span indicates the absolute difference between such input angle for 4 mA and that for 20 mA.
INPUT SPECIFICATIONS
Input
: Mechanical rotating angle
Effective rotating angle
: Approx. -55 – +55° (110°)
Linearity assured range
: -45 – +45° (90°)
Input angle ajustment
: Angle for positive and negative with center 0°. (-22.5 - +22.5° to -45 - +45°)
Stopper strength
: 1.37 N·m (1.011 ft·lbf)
with static load
OUTPUT SPECIFICATIONS
Output
: 4 – 20 mA DC
Operational range
: 3.5 – 23 mA DC
Load resistance v.s. supply voltage
:
Load Resistance (Ω) = (Supply Voltage (V) – 12 (V)) ÷ 0.02 (A) (including leadwire resistance)
(Refer to the graphic on the end of the section)
Output characteristics
: Proportional to the input angle
INSTALLATION
Supply voltage
: 15 – 28 V DC
Operating temperature
: -5 to +60°C (23 to 140°F)
Operating humidity
: 30 to 90 % RH (non-condensing inside)
Environemnt
: Protect from strong magnetic field.
Vibration
: ≤ 2 G (19.6 m/s
2
)
Mounting position
: All directions
Weight
: 550 g (1.21 lb) without lever and cable
PERFORMANCE in percentage of span
Linearity
: 1.0 %
Temp. coefficient
: ±0.03 %/°C (±0.02 %/°F)
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 500 V AC @ 1 minute
(output to metal housing)
STANDARDS & APPROVALS
EU conformity
:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
RoHS Directive
EXTERNAL DIMENSIONS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM