Flowserve BUSwitch - Manual (Page 2)

AXAIM020-01 (AUTO-48) 3/03 Page 2 of 16
© 2003, Flowserve Corporation, Printed in U.S.A.
BUSwitch ™ with F
OUNDATION
® Fieldbus Protocol
Installation, Operating and Maintenance Instructions
Flowserve Corporation 1350 N. Mountain Springs Parkway 1978 Foreman Dr.
Flow Control Division Springville, Utah 84663-3004 Cookeville, TN 38501
www.flowserve.com Phone: 801 489 8611 Phone: 931 432 4021
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Principles of Operation . . . . . . . . . . . . . . . . . . . . . . 2
Printed Circuit Board Specifications. . . . . . . . . . . . . 3
Start-up Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . 4
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . 5
Adjustment of Switch Cams. . . . . . . . . . . . . . . . . . . 6
BUSwitch ™ Embedded Software Specs . . . . . . . . . . 6
Resource Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Resource Block Parameter Table . . . . . . . . . . . . . . . 7
Transducer Block. . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pneumatic Actuator Operation. . . . . . . . . . . . . . . . . 9
Valve Position Monitoring and Reporting . . . . . . . . . 9
Auxiliary Dry Contact Input . . . . . . . . . . . . . . . . . . 10
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Transducer Block Parameter Table. . . . . . . . . . . . . 11
DI Function Block Parameter Table . . . . . . . . . . . . 14
DO Function Block Parameter Table . . . . . . . . . . . 15
Introduction
Flowserve’s BUSwitch ™ uses the F OUNDATION ®
Fieldbus communication protocol to operate
pneumatic valve actuators and monitor/report their
position. BUSwitch
™ also provides an odometer and
stroke timer to assist in preventative maintenance.
Principles of Operation
BUSwitch ™ utilizes two discrete output function
blocks (DO-1 and DO-2) to energize piezo or
coil actuators, which act as pilots to shift a large
capacity spool valve. For spring return and double
acting applications with a desired fail position (open
or closed) DO-1 is used to operate a single pilot.
For applications requiring fail in last position,
both DO blocks are used with a “dual coil” pilot
configuration.
In dual coil mode, users may choose to de-energize
piezo/coil elements after the valve has reached its
desired position or may configure the elements to
remain energized (factory default)(see “Transducer
Block”).
Valve position is sensed with two limit switches.
BUSwitch
™ communicates the state of these limits
in the transducer block’s SOLENOIDE_CLOSED
and SOLENOIDE_OPENED parameters and in the
READBACK_D parameters of DO-1 and DO-2.
The transducer block’s ODOMETER parameter tracks
the number of valve strokes. It may be reset using
RESET_ODOMETER.
The transducer block’s transition alarm alerts the
used if the stroke time exceeds the time in the
parameter TIME_OUT, this alarm is also passed
to the OUT_D of the DI-1 block.
Two discrete input blocks are factory-configured.
DI-1 is a discrete value indicating the stroke exceeded
a specific time. DI-2’s OUT_D parameter provides a
link to an external dry-contact input (terminal P4).
This input is jumper-selectable to normally open or
normally closed (jumper J1/J2). Common uses for
this input include valve packing pressure monitoring.
A 2-wire cable using the FF H1 (31.25 Kbps)
protocol provides communication and power to the
FF Communication Board. The communications
board, switches, and piezo/coil pilots are all
connected to an interface board. Two versions
of this interface card are available:
• 2-Wire for bus-powered pilot applications.
Utilizes ultra-low power piezo pilot valves.
• 4-Wire for externally powered pilot applications.
Utilizes a wide range of 24VDC coil pilot valves.
The communications card operates from 9.5 to
32 VDC. BUSwitches are configured to draw
18 mA of current. Current consumption from the
fieldbus segment will remain constant whether a
piezo/coil actuator is activated or not.