Flowserve AS-I User Manual

Automax Valve Automation Systems

Installation, Operation and Maintenance Instructions

Flowserve Corporation 765 South 100 East Phone: 801 373 3028 Flow Control Division Provo, Utah 84606 Facsimile: 801 489 2228 Automation Business Unit www.flowserve.com Email: actuators@flowserve.com

AS-I Bus Card for BUSwitch and UltraSwitch Enclosures

Introduction

Flowserve’s BUSwitch™ uses the AS-I Bus communication prot ocol to operate pneumatic valve actuators and m onitor/r ep o r t the ir p os ition. The AS-I card may be provided in Flowserve’s Aviator enclosure with integrated solenoid valve or in our UltraSwitch™ enclosures for use with external solenoid valves.

Principles of Operation

BUSwitch™ utilizes two dis crete outputs to en ergize solenoid valves, which operate rotary pneumatic actuators. For spring return and double acting applications with a desired fail position (open or closed). Output one ( 1) is used to operate a singl e pilot. For applic ations requiring fail in last posi tion, both output one (1) and out put two (2) are us ed with a “dual coil” pilot configuration.

Actuator position is sensed with two limit switches. BUSwitch™ communicates the state of these lim its into the master as input one (1) and input two (2)

A 2-wire cable using the AS-I (166 kb/s) protocol provides communication and power to the AS-I Communication Board. This card operates from

29.5 to 31.6 VDC.

Printed Circuit Board Specifications

Power requirements

XA0244

Communications Card

Temperature

Operational -55 °F to +185 °F

Storage -55 °F to +250 °F

29.5 to 31.6 VDC

(-48 °C to +85 °C)

(-48 °C to +120 °C)

AS-I Bus Information

ID Code (describes device behavior)

ID 0001 Binary

This code is specific to

Flowserve’s AS-I board and is

stored in non-volatile memory

I/O Code (describes type of I/O implemented)

Type OUT OUT IN IN

I\D 1011 Binary

This code is also stored in nonvolatile memory.

Start-up Guide

1. Following the instructions in “Mechanical Installation,” install the BUSwitch™ onto a pneumatic actuator and turn supply air on.

2. Following the instructions in “Electrical connections,” connect AS-I bus.

3. Bring up control software used for AS-I implementation.

4. Turn power onto AS-I bus.

5. Using output 1 value parameter (and output 2 for dual coil mode), stroke the valve (Discrete 0 = de-energized; Discrete 1 = energized) and set limit switches, r eferring to “ Adjustment of S witch Cams” section. Circuit board mounted LED’s light when switches are tripped.

This is the minim um c onfiguratio n to oper ate the actuator and read valve positio n

Mechanical Installation

Installation is best performed with Flowserve NAMUR mounting kits. These kits allow direct mounting of the BUSwitch™ shaft to the actuator pinion without a coupl er. The NAMUR mount ing kits will work with any actuator conforming to the instructions, NAMUR standard for accessory mounting hole locations and pinion dimensions. Simply attach the bracket to actuator and BUSwitch™ to the bracket with the included fasteners. The BUSwitch™ shaft features an integral alignment pin that engages the tapped pinion hole. Flowserve a lso offers a full line of nonNAMUR mounting kits.

Spool and Tubing Configuration

1. For external solenoid valves, refer to solenoid valve operating instructions for piping and tubing configuration. For integrated solenoid valve, a four-way spool valve is provided. Plug port #2 for 3-way applications (Figure 1). Make sure the plug is properly configured before installing tubing.

2. Make sure all air pressure is removed before installing tubing.

3. Attach tubing according to solenoid valve manufacturer’s instructions. For integrated solenoid valve configuration, refer to Figure 1 for

Automax Valve Automation Systems

Installation, Operation and Maintenance Instructions

Flowserve Corporation 765 South 100 East Phone: 801 373 3028 Flow Control Division Provo, Utah 84606 Facsimile: 801 489 2228 Automation Business Unit www.flowserve.com Email: actuators@flowserve.com

spring return or Figure 2 for double acting applications. Attach supply tubing to Port 1 and use 3 and 5 for exhaust.

4. To prolong actuator life use only clean, dry plant air. Lubricated air is not required, although it is recommended, particularly for high cycle applications.

Figure 1

Electrical Connections

CAUTION

To prevent ignition of hazardous atmospheres,

keep cover bolts tight while circuits are live.

Disconnect supply circuit before opening.

Entry into the BUSwitch™ integrated solenoid housing is made through three ½” NPT conduit entries. UltraSwitch enclo sures feature two entries: ¾” NPT for XL and PL series and ½” NPT for GL series. Figure 3 pro vides terminal locations on the XA0244 interface card.

Connection of the data cable is made to connector P3 - observing polarity. Incorrect polarity will not damage the electronics, but it will prevent communication. Caution: make sure power is

turned off when making electrical connection.

For hazardous locations, Underwriters Laboratories (UL) and the National Electric Code (NEC) require an approved sealing f itting within eighte en inches of the switch enclosure.

Figure 2

Lubrication

All BUSwitch™ integrated spool valves are prelubricated and will operate dry (with no additional lubrication). The use of lubricated air will not interfere with the functioning of the BUSwitch™. If air lubrication is used, the oils listed below are popular, easily obtainable, fluids that are recommended for use with the BUSwitch integrated spool valve: Gulf Harmon y 47, Mobil DTE Medium, Shell T ellus 29, Texaco Rondo B, Soh ivis 47 and Sunnis 921. Many other lubricants are acceptable providing they do not contain det ergents that will attack Buna N or Viton Seals.

Solenoid to AS-I Interface Card (XA0244 rev 2.0)

Figure 3

Open conduit entries must be closed after installation using a close-up plug approved for hazardous locations. Conduit and plugs must fully engage five threads.

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