Nidec Avtron SAFETach III SV850 Instructions Manual

www.avtronencoders.com
Nidec Industrial Solutions
243 Tuxedo Avenue | Cleveland, Ohio 44131
encoderhelpdesk@nidec-industrial.com
+1 216-642-1230
ENCODER INSTRUCTIONS
GENERAL
The Avtron Model SV850 SAFETach™ III is an incremental encoder (also
known as tachometer or rotary pulse generator), allowing operation
down to zero RPM. It provides a specific number of electrical Pulses Per
Revolution (PPR) that are proportional to a shaft's revolution. The SV850
SAFETach III is a bearingless, couplingless, modular design, providing
unequaled reliability and mechanical performance in a functional safety
enviroment.
The SV850 fits AC and DC motors with an 8.5" C (FC / 180) Face. Both
end-of-shaft and through shaft mountings are accommodated.
The SV850 Encoder consists of three or four parts: a rotor, a stator
housing, and one or two removable sensor modules. No gapping,
adjustment, or shimming is required!
An Avtron SV850 SAFETach III is equipped with one or two SV5 sensor
modules. Each module has a two-phase output (A, B) 90° out of phase,
with complements (A, B), (A Quad B Output), and a marker pulse
with complement (Z, Z). For applications which require more than 2
independent outputs, SV850 encoders may be stacked via the use of
shaft adapters (see Table 2 for part numbers). Two separate encoders
would be purchased.
Output resolution on the SV850 is determined by the sensor only. Unlike
older models, any PPR's can be mixed and matched. Selection of the
rotor is based only on the shaft mounting requirements (and not PPR).
The SV5 removable sensor assembly has a diagnostic package that
includes Adaptive Electronics and a Fault-Check output. With this
package, the SAFETach III can maintain itself, and let you know if there is
a problem before the problem causes unscheduled downtime.
SECTION II: INSTALLATION
GENERAL
The motor must comply with NEMA MG1 for dimensions, face runout, and
shaft runout. Axial float or endplay must be less than +/-0.100" inch.
INSTALLATION HARDWARE
Installation hardware required is attached to each assembly.
Equipment needed for installation
The outer edge of the rotor may be damaged by scratches, severe blows,
and strong magnetic fields.
ROTOR INSTALLATION
Use the dial indicator gauge to ensure motor shaft runout (TIR) does not
exceed (0.004") [0.10mm]. Apply anti-seize compound to the shaft.
SV850 SAFETach™ III Incremental Encoder
SV850
Equipment Needed for Installation
Provided Optional
SV850 Encoder - A35226 Gauge or
A25355 M285/
- Washer, Spring Lock
SV850 Rotor
1/2 (4)
Gauge Block
- Hex Hd. Cap Screw
- Inboard Through-
1/2-13 x 3.00 (4)
Shaft Seal Plate
Rotor
- Outboard Through-
- Rotor Installation
Shaft Seal Plate Kit
Hardware Kit
- Silicone Lubricant
- Anti-Seize
or 20 Weight
Compound (copper)
Machine Oil
- Thread Locker (blue)
- Dead Blow Hammer
- Large Frame
Adapter Kit
(Modification "700")
SV850 Shield Kit
(A35355)
CAUTION
Do not strike the encoder or rotor at any time. Damage
will result and the warranty will be void. At installation,
clean and remove paint and burrs from motor shaft and
mounting face. Apply anti-seize compound (supplied) to
each EXCEPT CAM SCREW ROTORS.
NOTE
If optional inboard seal plate and/or magnetic shield is
used, gage the rotor location from the shield/seal plate(s).
Ensure the rotor label marked "this side out" is facing
away from the motor.
Incremental Encoder
Not Provided
- 3/4" Wrench
- Phillips Screwdriver
- 7/16" Nut Driver
- Dial Indicator
- Vernier Caliper
- 3/32" Hex Wrench
(T-Handle style) (thru
shaft rotors only)
- 3/16" Hex Wrench
(cam screw rotors only)
- 9/16" Wrench (end-of-
shaft rotors only)
Rev: 001 1