Emerson V150 Manual de Instruções descarregar pdf (Página 5)

Basis Weight Actuator

Figure 3. SKF Actuator with Design V150 Valve

DESIGN V150 VALVE

MOTOR MOUNTING

SCREWS

COUPLING HOUSING

MOUNTING

BRACKET

INDICATOR

COVER

HANDWHEEL

INDICATOR ASSEMBLY

STEPMOTOR

W5393 / IL

wheel is intended for use during power outages or

when ac power has been removed at the external cir-

cuit breaker box.

The PEAB IC2000 Stepmotor Interface contains the

circuit cards necessary to operate the actuator. The

Stepmotor Interface is provided with a lock to discour-

age unauthorized access. Keep the key in a secure

location where only authorized people can get it.

All of the circuit components are plug–in modules.

Each component is mounted to a faceplate that is vis-

ible from the front of the Stepmotor Interface. Use the

faceplate handle to pull the plug–in module (compo-

nent) out of the cabinet. Connections between the

modules and the Stepmotor Interface are gold–plated

edge connectors.

Table 5 describes how each card within the IC2000 is

connected to the other cards. Each card has two col-

umns of pins labeled 2a, 4a, and up to 32a (also 2c,

4c, and up to 32c). The table indicates that 2ca is 24 V

and 32ca is ground, which is connected to power com-

mon (terminal 10 on terminal block TB1).

See figure 14 for information in the Input Signal Wiring

section. Also see the External Control Signal portion of

the Wiring section.

Included as standard in the Stepmotor Interface are:

SD13 Driver Card—This card (key 1, figure 5) sends

pulses to operate the stepping motor. See the Driver

Card section.

Power Transformer– This 225 VA toroidal transform-

er, mounted on the power supply backplane (see fig-

ure 7), supplies internal power.

Terminal Blocks—All field connections including con-

trol signals are made to terminal block TB1, TB2 or

optional TB3 (see figure 9).

IC500 Interface Card—This card (key 3, figure 5) re-

ceives the control signal, which is sent from a custom-

er–supplied control device, from the manual station

(key 4, figure 5), or from the optional remote station

(see figure 6).

The inputs are optically isolated. The card has four

direct inputs, two for manual operation of the actuator,

and two for computer operation of the actuator. The

IC500 gates the internal oscillator to the driver card

when input is low. If there is no low input, a transistor

sets the current to the motor at the standby “braking”

value to provide stiffness (holds the valve in position).

See figure 5. The IC500 card includes screwdriver ad-

justments on the lower half of the front panel for actua-

tor motor speed for both manual (MAN) and computer

(COMP) operation. Normally, a low speed is used for

computer operation, and a high speed is used for

manual operation.

The faceplate also has four LEDs on the interface

card. The LEDs allow you to verify that signals are

reaching the card. Different LEDs are provided for sig-

nals intended to open (INC) or close (DEC) the valve

in both manual (MAN) or computer (COMP) operation.

FT100 Motion Feedback Transmitter—This transmit-

ter (key 5, figure 5) senses actuator feedback poten-

tiometer resistance and provides a proportional 1 to 5

volt signal for internal use (valve position indicator)

and a proportional 4 to 20 mA dc signal for external

use (extra valve position indicator or input to a remote

computer).

Manual Station—This module (key 4, figure 4) allows

selection between manual and computer operation of

the actuator and valve. It also provides the means to

open or close the valve from the Stepmotor Interface.

It includes the digital valve position indicator (0–100%)

which is driven by the FT100 0–1 V output line.

For manual operation, press and release the local con-

trol button. Then, rotate the DEC–INC knob toward

DEC (decrease) to close the valve or toward INC (in-

crease) to open the valve. If you turn the knob all the

way to DEC or INC, the knob will remain engaged, and

the valve will open or close until a limit switch stops

motor operation.

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Emerson V150 Manual de Instruções Página 5

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