Owner's manual

SECTION I. DESCRIPTION
l-l. COMPONENT CHECKLIST OF TYPICAL
SYSTEM (PACKAGE CONTENTS). A typical
Rosemount 4 X 5 Power Positioner package should
contain the items shown in Figure. l-l.
1-2. MODEL NUMBER MATRIX. Use model number
matrix, Table 1-1, to verify your style number. The
first pat of matrix defines the model. The last part
defines various options and features of the power
positioner. Copy your model number from data plate
located on side of power positioner, into top of matrix
Table 1-1. Check your model number against power
positioner features and options, making sure options
specified by this number are on unit. Use this
complete model number for any correspondence with
Rosemount.
1-3. SYSTEM OVERVIEW.
a. m. This Instruction Bulletin supplies details
needed to install, operate, and service the
Rosemount 4 X 5 Torque Type Power Positioner
(Figure l-l). The standard power positioner
comes with manual lever, manual lock, bypass
valve, current to pneumatic signal converter (I/P),
pressure regulator/filter, supply air filter, clevis,
and dust cover. Power positioner options include
electric position transmitter, limit switches,
heater/thermostat, air lock, and minimum limit
stop. Service instructions for these options are
covered in appendices to this manual.
b. Power Positioner Features. The standard model
power positioner includes the following features:
1. The manual lever provides leverage so
operator can manually change position of the
device being controlled by hand.
2. The manual lock allows operator to lock
piston and output shaft assembly in any
position. This is done by turning lock handle
fully clockwise, manually shutting off air
supply, and opening bypass valve.
3. A bypass valve provides a passage between
top and bottom of piston. This equalizes air
pressure on both sides of piston, allowing
manual positioning of device being
controlled.
4. The current to pneumatic signal converter
(VP) controls signal air to power positioner
through an electrical signal. This electrical
signal can be either a direct 4 to 20 mA
signal, or an inverse 20 to 4 mA signal. The
power positioner can be ordered without the
I/p converter. Without the UP converter, an
ITEM DESCRIPTION
9
1 Model PP405TR Power
Positioner
2
Air Filter
3
Instruction Bulletin
Figure l-l. Typical System Package