XR56 SMARTSafe
TM
XR56 SMARTSafe
TM
1
www.avtronencoders.com
Nidec Industrial Solutions
243 Tuxedo Avenue | Cleveland, Ohio 44131
+1 216-642-1230
4 1/2” C-FACE MOUNT MODULAR
FOR HAZARDOUS APPLICATIONS
ENCODER INSTRUCTIONS
Rev: 09-15-2020
DESCRIPTION
The Avtron XR56, SMARTSafe™ is a modular, two piece incremental
encoder for hazardous atmosphere applications. It provides a two phase, A
Quad B frequency (pulse) output, with complements. The XR56 mounts on
a 4.5” (NEMA 56C) Face.
CAUTION
The XR56 is designed for use in hazardous applications
which require protection from gas or dust ignition for
safe operation. Proper selection, wiring and installation
procedures are essential to ensuring safe conditions.
Because the XR56 is modular, there are no bearings or couplings required.
This, combined with the latest magneto resistive (MR) sensor technology,
allows the XR56 to provide superior mechanical performance and
increased reliability.
An Avtron XR56 can be configured with one or two independent outputs.
Each output has six signals: (A, B) 90° out of phase, with complements (A–,
B–). A marker pulse with complement (Z, Z–) is also provided.
Output resolution on the XR56 is determined by the sensor only.
Unlike older models, any PPRs can be mixed and matched. Selection of
the rotor is based only on the shaft mounting requirements (and not PPR).
ADAPTIVE ELECTRONICS
A perfect duty cycle consists of a waveform whose “high” and “low”
conditions are of the same duration (50%/50%). It is possible over time
for the duty cycle and edge separation to change due to component drift,
temperature changes, or mechanical wear. The Adaptive Electronics
extend the life of the XR56 by constantly monitoring and correcting duty
cycle and edge separation over time.
INSTALLATION
WARNING
Installation should be performed only by qualified
personnel. Safety precautions must be taken to ensure
machinery cannot rotate and all sources of power are
removed during installation.
Refer to the following attached installation drawings for installation
information appropriate for specific hazardous locations:
D53008: ATEX / IECEx Zone 1, 21
D52353: ATEX / IECEx Zone 2, 22
D52354: US and Canada Class I Division 1 Encoder
D52355: US and Canada Class I Division 2
NOTE
The equipment is intended for a fixed installation and
should be mounted so as to avoid electrostatic charging.
The XR56 is not considered as a safety device and is not
suitable for connection into a safety system.
The XR56 construction materials contain no more than 7.5% in total by
mass of magnesium, titanium and zirconium. These materials are not
considered as able to trigger an explosion in normal operating modes.
These materials are not known to react with any explosive atmospheres
to which the XR56 may be subject. The construction materials do include
aluminum. As such care should be taken to avoid the possibility of
ignition from impact or friction. It is the responsibility of the end user to
ensure that the XR56 is selected correctly for the potentially explosive
atmosphere in which the equipment is to be put into service.
The XR56 installation is similar to AV56. Installation and removal videos
for the AV56/67/85/115 are available on Avtron’s web site. Refer to the
back page of these instructions for outline and mounting dimensions.
The motor must comply with 1998 NEMA MG 1, section 4, for tolerances
on diameters and runout for shafts and accessory faces. Axial float or
endplay plus rotor location tolerance must be less than ±0.050”.
EQUIPMENT NEEDED FOR INSTALLATION
Provided
Optional
Not Provided
• AV56 Stator/Housing
• Socket Hd Cap Screw 3/8"-16 x 1.25" (qty 4)
• AV56 Rotor
• Socket Set Screw #M4 x 8mm (qty 2) or Pre-Installed Cam Screw
• Thread locker (Blue)
• Extended Shaft Cover w/ Screws 6-32 x 0.31" (qty 4)
• Lock Washers
• Thru Shaft Cover w/ V-Ring Seal and Silicone Lubricant
• XRB3 Isolator
• Model XRB3 for Division I, Zone 0, 1, 20 and 21 Applications
(Sold Separately)
• Phillips Screwdriver
• 2mm Hex Wrench (T-Handle Style for set screw Rotors)
• 3mm Hex Wrench
• 5/16" Hex Wrench
