Indexing Servo Systems with DeviceNet Overview

Sanyo Denki Indexing Servo Systems with DeviceNet are fully-digital and high-performance. A Selection Chart is available to help you choose a system. The DeviceNet connection includes comprehensive support of standard object classes.  The built-in indexer includes a homing routine, jogging with controlled velocities, incremental & absolute positioning with controlled motion profiles, and ability to read & write the drive parameters – all from standard DeviceNet!  For an overview of the system capabilities download our application note: Taking Advantage of the Incredible PV Indexing Drive with DeviceNet.  Full details are available in our PV Indexing Servo System with DeviceNet Instruction Manual, which can also be downloaded.

The drive also has complete built-in functionality for dynamic braking, handling of regenerative energy with internal or external resistors, and digital inputs/outputs for motion limits, brake control, alarm, slow-down, and stop functions.   Extra regeneration energy handling capability can be added to each ac servo drive with standard external regeneration resistors.   The universal remote operator can be used for drive set-up and troubleshooting. Standard cables for motor power and encoder feedback are available that have all the necessary connections on both ends of the cables. There is also an optional breakout board with screw terminals and a connection cable to facilitate all other connections to the servo drives. Standard cables for motor power, motor feedback, and I/O connections are available.

The PV Indexing Drives and P3 Motors (IP-43) are offered in three system combinations. Use the Selection Chart below for assistance in choosing the product that is right for your application.

100 Watt System400 Watt System750 Watt System

Each system operates to a maximum speed of 4500 r.p.m. The low-inertia motors have a built-in 2000 line (8000 count per revolution) encoder and optional 24 VDC spring-set holding brakes. These ac servo drives have complete built-in functionality including dynamic braking and handling of regenerative energy.

PV Indexing Servo Drive with DeviceNet Overview

The PV Indexing Drive with DeviceNet is miniature in size but large in functionality. The family includes 2 package sizes (15 and 30 amp peak ratings) with common height and depth dimensions. The PV indexing drives operate from a single-phase 230 VAC input and have built-in functions such as dynamic braking and regenerative energy processing. The PV indexing drives are manufactured in an ISO-9001 facility, have UL listing, and are CE marked.

The PV indexing drives are fully-digital and are setup using the DeviceNet link. Alternatively, setup and troubleshooting can also be accomplished with the universal remote operator. DeviceNet eliminates the typical hardwired interface with a cost-effective and reliable 5-wire connection. The master controller uses DeviceNet to access all drive parameters and to initiate motion at target positions or velocities. All the details of operation are found in the PV Indexing Servo System with DeviceNet Instruction Manual which may be downloaded free of charge  from our downloads section.

Features: Built-in Indexer with DeviceNet Interface, Vibration Suppression (low pass filters and a notch filter), Separate AC Input for the Main and Control Power, Built-in Functionality

Benefits: The built-in indexer lowers cost by eliminating the separate indexer card while the DeviceNet link lowers cost, improves reliability by eliminating the usual hardwired interface, and increases communication capability. As a result, the same drive to be used for a very wide range of applications. The PV indexing drives include programmable filters to suppress mechanical vibration of the load, resulting in smoother and quieter operation in these situations. The main (or motor or "bus") power can be disconnected during an alarm or emergency stop situation while retaining the control (or logic) power for fault analysis and retention of position feedback. The PV indexing drives are very complete, with a built-in dynamic brake to stop the motor during an emergency stop condition, and a built-in regeneration circuit to handle excess energy during motor speed reversals. The PV indexing drive also provides for the holding brake control timing signals. The built-in functionality of the PV indexing drives tremendously simplifies the electronic panel design by minimizing the need for extra external components.

P3 Motor Overview

The compact and low-inertia P3 brushless servo motors are available in three sizes: the 40mm square 100 watt size, the 60mm square 400 watt size, and the 80mm square 750 watt size. All of the P3 motors can operate to 4500 r.p.m., include a built-in 2000 line "wire-saving" optical encoder, and have optional 24 VDC spring-set holding brakes. The P3 motors have connectorized leadwires and an IP-43 environmental rating.

The P3 motors have a unique magnetic design and very efficient thermal management that results in motors that are about one-half the volume of conventional motors. The compact size and low-inertia of these motors make them ideal for applications requiring fast response.

Features: Compact Size, Environmental Rating, Round Shaft with no Keyway, Wire-Saving Encoder, Brake Option, Metric Dimensions

Benefits: 50% smaller than conventional motors, the P3 Motor's IP-43 rating provides protection of persons to hazardous parts and protection against penetration of solid foreign objects greater than 1.0 mm in diameter and protection against ingress of spraying water under test conditions as specified in IEC 529. The P3 Motor Series supports the use of "clamp-on" type couplings and pulleys which are needed for high-performance servo applications, and supports applications with fast accelerations and decelerations as well as high duty-cycle applications. It has a 2000 line with differential line driver (8000 pulses/rev inside drive) with only eight active wires, a built-in holding brake (24 VDC Spring-Set), and is offered in popular mounting dimensions interchangeable with many other suppliers.

Selection Chart for Indexing Servo Systems with DeviceNet

PV Servo Drives and P3 Motors (Compact Drive + IP43 Motor)

Servo System Rating	Flange omm	Stall Torque		Peak Torque		Motor Inertia		Motor Weight
		lb-in	Nm	lb-in	Nm	lb-in-s2	kg-m2	lb	kg
100W	40	8.7	0.98	3.1	0.35	0.000045	0.0000051	1.1	0.5
400W	60	33.8	3.82	12.1	1.37	0.00023	0.0000255	3.7	1.7
750W	80	63.3	7.15	22.6	2.55	0.00056	0.0000635	7.3	3.3

Important Notes:

System rating is the continuous output power from the motor shaft rotating at 3000 RPM. Maximum speed is 4500 RPM. Motor inertia and weight values are without brake.

The system cables must be purchased from Sanyo Denki America (see FAQ).

Required mating connectors for the servo drives are supplied with the drive; however - mating connectors for the motor are not supplied, except as a part of the required cable sets.

A master controller with DeviceNet is necessary to interface with the PV Indexing Drive with DeviceNet.

The handheld remote operator and 2 meter connection cable are common to the PE, PV, and PY servo drives. The remote operator is used for setting the servo drive parameters and for checking the internal status of the servo drive.

The easy-to-use remote operator has a 2 x 16 character LCD display. Each character is a 5 x 7 dot matrix. This allows for a more complete message display than the typical 8 character display provided by the competition. The compact remote operator is easy for anyone to use and is an excellent tool for the factory floor. One remote operator can be used for multiple servo drives because it is completely independent of the drive and can be quickly attached and removed as required.

The Remote Operator has four modes: parameter mode, monitor mode, alarm tracing mode, and test mode. Five test points are also available on the bottom of the remote operator: speed command, alarm status, motor excitation status, and two programmable test points - M1 & M2 (which allow the monitoring of additional drive signals).

Breakout Terminal Board & Interface Cable

Another very useful accessory is the Breakout Screw Terminal Board and interface cable to the CN1 connector on the drive. This accessory makes all the I/O signals from CN1 available for user connection at the screw terminal board. There is a 10 foot limit on the length of the interface cable. This breakout board and interface cable should be contained within your control cabinet. Please consider this accessory to make your interface connections to the drive easy and trouble-free.