Avtron AV115 Manual de instruções - Página 4

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COVER INSTALLATION

Covers must not interfere with the motor shaft or rotor. The lon-

gest shaft that can be used without interfering is 17.5mm with a

standard flat cover (Cover Style option "F") and 63.5mm with an

extended "pie pan" cover (Cover Style option "E"). Through shaft

covers with seals are avail able for other applications (Cover Style

option "T").

EXTENDED COVER MOUNT

The extended cover mounts to the encoder housing using quantity

4 #6-32 x 0.31" screws, lock washers, and thread locker.

THRU SHAFT AND FLAT COVER INSTALLATION

(Cover Style option "T" and "F")

The housing has a machined step in the outboard face to accept

the cover and a recessed groove for the retaining ring. Insert

the cover, line up ears on cover, smooth side facing out, fully

into the machined step until it seats against shoulder. Using a

spiral assembly method, install the retaining ring by first insert-

ing the squared off end into the machined groove. Flex the ring

and insert it into the groove walking it around the perimeter (A

flat blade screwdriver can be used). Final position should have

the ring fully seated into groove. Remove the cover by reversing

above procedure, starting with the tang end.

V-RING INSTALLATION FOR THRU SHAFT COVERS

(Cover Style option "T")

For thru shaft covers, verify that the shaft passes completely

through the hole in the cover. Apply a small amount of silicone

lubricant to the cover plate around the thru shaft hole. The

V-Ring seal should compress axially when it is pressed against

the clean, smooth face of the cover plate. See Figure 4 for proper

installation and V-Ring compression.

WIRING

CAUTION

Be sure to remove power before wiring the encod-

er. Be sure to ground the cable shield: It can

be con nected to case ground at the encoder, or

grounded as the receiving device, but should not

be ground ed on both ends. See note below for

Danaher/Northstar wiring.

Refer to the wiring diagrams for specific information on each

option.

The AV115 can be wired for single phase or two phase, either

with or without complements, with or without markers. For bidi-

rectional operation, Phase A channel leads phase B channel for

clockwise shaft rotation as viewed from the anti-drive or acces-

sory end of the motor (AV115 mounting end).

Wiring option "G" provides a pinout compatible

with NorthstarTM encoders, with a cable shield

connection on pin 10. Note that this option does

not ground the shield; Avtron still recommends

grounding the shield at the drive end of the cable

for all wiring options.

(Cover Style option "E")

NOTE

CORRECTIVE ACTION FOR PHASE REVERSAL

1) Remove Power.

2) Exchange wires on cable, either at encoder cable end,

or at speed controller end (but not both).

a) Single Ended 2 Phase Wiring (see wiring diagram)

Exchange A and B at the use end of the wires.

b) Differential 2 Phase Wiring (see wiring diagram)

Exchange either A with A

–

B with B

in the phase B pair but NOT both.

3) Apply Power.

4) Verify encoder feedback is correct, using hand rotation

of shaft, or jog mode of the speed controller.

Interconnecting cables specified in the wire selection chart are

based on typical applications. Physical properties of cable such

as abrasion, temperature, tensile strength, solvents, etc., are dic-

tated by the specific application. General electrical requirements

are: strand ed copper, 22 through 16 AWG (Industrial EPIC con-

nector type options can use 14 AWG), each wire pair individually

shield ed with braid or foil with drain wire, .05 uf of maximum total

mutual or direct capacitance, outer sheath insulator. See specifica-

tions for maximum cable length. Strand ed 22 AWG wire should not

be used for cable runs great er then 61 meters. If 22 AWG is used

with EPIC type connector options the wire ends should be tinned.

FAULT-CHECK

After power-up and the rotor position is checked by the sensor,

the Fault-Check LED will turn green.

If the adaptive electronics reach their adjustment limit for any

reason, the Fault-Check alarm and LED will notify the drive and

operator of an impending failure. The LED will turn red if the

Adaptive Electronics reach their adjustment limit. This output

occurs before an actual failure, allowing steps to be taken to

replace the unit before it causes unscheduled downtime. Fault-

Check annunciation is available as an "alarm" output through

the connector and as an integral LED.

TROUBLESHOOTING

If the drive indicates a loss of encoder/tach fault and the AV115

fault-check LED is not illuminated, check the encoder power

supply. If power is present, check polarity; one indicator of

reversed power supply is that all outputs will be high at the

same time. If the drive indicates encoder fault, but the LED

shows GREEN, then check the wiring between the drive and

the encoder. If the wiring appears correct and in good shape,

test the wiring by replacing the AV115. If the new unit shows

GREEN, and the drive still shows encoder loss/tach fault, then

the wiring is faulty and should be repaired or replaced.

If the alarm output and/or LED indicate a fault (RED):

1. Remove the rear cover, and use the built-in gauge to check

the location of the rotor (see Figure 1). Ensure the label marked

"This side out" is facing away from the motor.

2. Remove the AV115 from the motor. Clean the housing

mounting surface for the AV115 housing. Ensure the AV115 is

directly mounted on the motor, with no sealant, gasketing, or

other materials, and is firmly bolted in place.

If the alarm output and/or LED indicate a fault (RED) on a prop-

erly mounted AV115 and the rotor is properly located, replace

the AV115 sensor.

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in the phase A pair OR