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Series 185/285 Smart Positioners

Specifications - Installation and Operating Instructions

Bulletin V-185/285

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com

SPECIFICATIONS

Input Signal: 4 to 20 mA DC.

Input Impedance: 460 Ω max @ 20 mA DC.

Enclosure: Aluminum, SS.

Air Supply: 35 to 116 psi (2.4 to 9 bar).

Air Connection: 1/4˝ NPT.

age Connection: 1/8˝ NPT.

onduit Connection: 1/2˝ NPT.

inearity: ±0.5% FS.

Hysteresis: ±0.5% FS.

Sensitivity: ±0.2% FS.

Repeatability: ±0.3% FS.

Air Consumption: .0004 scfm (.01 LPM) at 20 psig (1.4 bar) supply.

Flow Capacity: 2.1 scfm (60 LPM) at 20 psig (1.4 bar) supply.

Stroke: 185: 0.5 to 6 in (10 to 150 mm); 285: 0 to 90°.

Enclosure Rating: NEMA 4X (IP66).

Temperature: Operating: -22 to 185°F (-30 to 85°C).

Weight: 185: 3.3 lb (1.5 kg); 285: 6.4lb (2.9 kg).

Lever: 185: .39 to 1.57 in (10 to 40 mm); 285: NAMUR.

he Series 185 and 285 Smart Positioners control valve movements accurately

using an input signal of 4 to 20 mA from the controller. In addition, a highly efficient

microprocessing operator built into the product performs various functions such as

auto calibration, PID control, alarm and Hart

protocol.

eatures

•

LCD allows the user to directly check the positioner condition in the field.

•

Endures severe vibration.

• Operates normally regardless of changes in supply pressure during operation.

• Simple to use auto calibration.

• Easily equipped on small actuators because of its small size.

• Low air consumption reduces operating cost.

• Can be used in low voltage (8.5 V), leaving no limitation in controller.

• HART

communication available for configurating parameters or monitoring the

valve position.

• Analog feedback signal (4 to 20 mA).

• The adjustment of valve characteristics (linear, quick open, equal percentage)

available.

• Tight shut-close and shut-open can be set in the programming menu.

• PID parameters can easily be adjusted in the field without additional

communicator.

• Split ranges such as 4 to 12 mA, with 12 to 20 mA available.

• The positioner can manually actuate the valve or damper.

• An air filter regulator can be mounted directly to the positioner.

LCD SCREEN

SMART POSITIONER

-27/32

[97.50]

3-1/64

[76.50]

4-7/64

[104.20]

SUPPLY

/4 NPT

-33/64

[64.00]

2-11/32

[

59.60]

4-13/32

[

111.90]

STAINLESS STEEL

-31/64

[113.8]

STANDARD

CONDUIT ENTRY

/2 NPT

-31/64

[215.70]

DOUBLE

CTION

INGLE

CTION

-47/64

[95.00]

eries 185

eries 285

HART

is a registered trademark of Hart Communication Foundation

Summary of content (10 pages)

PAGE 1
Bulletin V-185/285 Series 185/285 Smart Positioners Specifications - Installation and Operating Instructions DOUBLE ACTION SINGLE ACTION 3-47/64 [95.00] LCD SCREEN SMART POSITIONER 3-27/32 [97.50] Series 185 8-31/64 [215.70] 4-13/32 [111.90] STAINLESS STEEL 4-31/64 [113.8] STANDARD CONDUIT ENTRY 1/2 NPT 2-11/32 [59.60] 2-33/64 [64.00] 3-1/64 [76.50] 4-7/64 [104.
PAGE 2
Structure The structure of the 185 is shown below. The Series 285 structure is the same as the linear model without the feedback lever. Installing Series 185 with Bracket It is necessary to make a proper bracket to attach on the actuator yoke. The most important considerations in the design of the bracket are as follows: - Series 185 feedback lever should be at 50% of valve stroke.
PAGE 3
6. Insert the connection bar attached on the actuator clamp into the slot of Series 185’s feedback lever. In order to reduce hysteresis, it should appear as shown: h! No Touc 40 50 60 9. Once the Series 185 is installed according to the above procedures, tighten the bolts and nuts of the bracket and feedback lever connection bar completely. 90 ° 7. Check that the Series 185’s feedback lever is level at 50% of valve stroke. If not, move bracket or feedback link until it is level.
PAGE 4
Installing Series 285 with Bracket Series 285 is supplied with a standard bracket. The bracket consists of two parts and is used with a NAMUR shaft. The bracket is assembled in the factory based on .79˝ (20 mm) of actuator stem height. If the actuator stem height is higher, such as 1.18˝ (30 mm), or 1.97˝ (50 mm), reassemble the bracket adjusting to the actuator stem height. Refer to the table below to check hole positions. 5.
PAGE 5
Piping Connection With Actuator Series 185 and Series 285 can operate either single or double acting actuators. Single Acting Actuator To operate a single acting actuator, connect OUT1 port to actuator supply pressure port. Close off the OUT2 port with the supplied 1/4˝ NPT plug. Terminal Plate of Series 185 and 285 Terminal Connection of Current Input Signal 1. Open cover by loosening the four M4 bolts on positioner cover. 2. Loosen locking bolts of terminal plate. 3.
PAGE 6
Auto Calibration and Basic Operations CAUTION Since this makes the valve or actuator move, before auto calibration, the valve must be separated from the entire system. Buttons Operations Series 185 and 285 positioners perform various functions using four buttons. The position of the buttons is shown below: Functions Enter to Main Menu and Sub-Menus, Save Adjusted Parameter Values, etc. Return to Previous Menu & Move to Next Menu, Change Parameter Values, etc.
PAGE 7
Parameter Mode (PARAM) Parameter Types There are four parameter modes: Dead Zone, KP, KI, and KD. These values are reflected as soon as they are changed, therefore the appropriate values are found by checking the valve’s motion in real time. Adjustment of Dead Zone (dEAdZONE) This is the range of error % that the positioner is not adjusted. Hunting or oscillation due to friction between the stem and packing is prevented by this parameter. 1.
PAGE 8
Valve Mode This mode adjusts the various characteristics. Action Type (ACT) It can be set to Direct Action (DA) or Reverse Action (RA). Adjustment of Acting Type (ACT) 1. Press and hold at RUN mode for 6 seconds and AUTO CAL message appears. 2. Scroll with until VALVE mode is displayed. 3. Push and ACT RA (in case of Reverse Acting) is displayed. 4. Push and *ACT RA is displayed. 5. Adjust to *ACT DA by pushing or and save it with . +ACT DA message appears.
PAGE 9
Tight Shut Open (TSHUT OP) This allows the user to fully open valve at input values around 20 mA. Adjustment of Tight Shut Open (TSHUT OP) 1. To adjust Tight Shut Open, scroll with at VALVE menu and select TSHUT OP. 2. Push and *SHUT OP mode is displayed. In this mode users can set stroke at the time of Tight Open. Initial setting is done as 100% which means the TSHUT option is disabled. Adjust the value (ex: 95.0%) by pushing or and save with . +SHUT OP is displayed. 3.
PAGE 10
Warning Code This code is displayed when the positioner control is available but there is a possibility of malfunction or low accuracy. Code B, F, G, H applies. MAINTENANCE/REPAIR Upon final installation of the Series 185/285, no routine maintenance is required. The Series 185/285 is not field serviceable and should be returned if repair is needed. Field repair should not be attempted and may void warranty. Action Re-install/mount the positioner.