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Allen-Bradley 1756-M02AS, Installation Instructions Manual, Page: 1 / 26

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Publication

 1756-IN595A-EN-P - March 2004

Installation Instructions

SSI Servo Module

(Catalog Number 1756-M02AS)
The Synchronous Serial Interface (SSI) Servo Module mounts in a 
ControlLogix™ chassis and uses a removable terminal block (RTB) to 
connect all field-side wiring.
Before you install your module you should have:

•

installed and grounded a 1756 chassis and power supply.

•

ordered and received an RTB and its components for your 
application.

To:

See page:

Note the Power Requirements

4

Identifying Module Components

5

Installing the Module

6

Keying the Module & Removable Terminal Block/Interface Module

7

Wiring a Removable Terminal Block (RTB)

8

Wiring to a Servo Module

10

Wiring Registration Sensors

11

Wiring the Home Limit Switch

12

Wiring the OK Contacts

12

Assembling the Removable Terminal Block and the Housing

13

Installing the Removable Terminal Block onto the Module

13

Checking the LED Indicators

14

Removing the Removable Terminal Block from the Module

19

Removing the Module

20

1756-M02AS Specifications

21

Rockwell Automation Support

Back Cover

Spare Allen-Bradley Parts

Summary of Contents for 1756-M02AS

Page 1: ...application To See page Note the Power Requirements 4 Identifying Module Components 5 Installing the Module 6 Keying the Module Removable Terminal Block Interface Module 7 Wiring a Removable Terminal Block RTB 8 Wiring to a Servo Module 10 Wiring Registration Sensors 11 Wiring the Home Limit Switch 12 Wiring the OK Contacts 12 Assembling the Removable Terminal Block and the Housing 13 Installing t...

Page 2: ... any particular installation Rockwell Automation Inc cannot assume responsibility or liability for actual use based on the examples and diagrams No patent liability is assumed by Rockwell Automation Inc with respect to use of information circuits equipment or software described in this manual Reproduction of the contents of this manual in whole or in part without written permission of Rockwell Aut...

Page 3: ...losure must be accessible only by the use of a tool Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to comply with certain product safety certifications See NEMA Standards publication 250 and IEC publication 60529 as applicable for explanations of the degrees of protection provided by different types of enclosur...

Page 4: ... module receives power from the 1756 chassis power supply and requires two sources of power from the backplane 700mA at 5 1 V dc 2 5 mA at 24V dc Add this current to the requirements of all other modules in this chassis to prevent overloading the backplane power supply WARNING When you insert or remove the module while backplane power is on an electrical arc can occur This could cause an explosion...

Page 5: ...Spring clamp RTB Use an extended depth cover 1756 TBE for applications with heavy gauge wiring or requiring additional routing space When using an IFM consult the documentation that came with it to connect wiring 1 The ControlLogix system has been agency certified using only the ControlLogix RTBs i e 1756 TBCH 1756 TBNH 1756 TBSH and 1756 TBS6H Any application that requires agency certification of...

Page 6: ...or Worn contacts may create electrical resistance that can affect module operation 1 Align the circuit board with the top and bottom chassis guides Figure 1 Circuit Board Alignment WARNING When you insert or remove the module while backplane power is on an electrical arc can occur This could cause an explosion in hazardous location installations Be sure that power is removed or the area is nonhaza...

Page 7: ...ule Use the wedge shaped keying tabs and U shaped keying bands to prevent connecting the wrong wires to your module Key positions on the module that correspond to unkeyed positions on the RTB For example if you key the first position on the module leave the first position on the RTB unkeyed 1 To key the module insert the U shaped band as shown Figure 3 Keying Band 20862 M Locking Tab 20850 M U sha...

Page 8: ...nded edge first as shown Figure 4 Keying Band 4 Push the tab until it stops Reposition the tabs to rekey future module applications Wiring a Removable Terminal Block RTB Your 1756 M02AS module uses two types of RTBs each RTB comes with housing to connect wiring Cage clamp Catalog number 1756 TBCH Spring clamp Catalog number 1756 TBS6H 20851 M Wedge shaped tab ...

Page 9: ...lamp RTB Cage Clamp RTB 20860 M 20859 M 1 Strip 7 16 inch 11mm maximum length of wire 2 Insert the screwdriver into the inner hole of the RTB 3 Insert the wire into the open terminal and remove the screwdriver 1 Strip 3 8 inch 9 5mm maximum length of wire 2 Insert the wire into the open terminal 3 Turn the screw clockwise to close the terminal on the wire ...

Page 10: ...ENABLE 1 DRVFLT 1 CHASSIS IN_COM HOME 1 REG24V 1 REG5V 1 OK CHASSIS CLOCK 1 CLOCK 1 DATA 1 DATA 1 SSI COM CHASSIS General cable C0720 To Servo Drive or valve To home limit switch To E stop relay coil To Servo Drive valve or pump To Synchronous Serial Interface SSI To registration sensor 43394 General cable C0721 General cable C0720 General cable C0720 General cable C0722 General cable C0720 1 This...

Page 11: ...t sinking sensor configurations are not allowed because the registration input common IN_ COM is shared with the other 24V dc servo module inputs Figure 7 24V Registration Sensor Figure 8 5V Registration Sensor From 1756 M02AS REG24V IN_COM 24 V dc Power Supply 24 Volt Registration Sensor Supply Output Common 43395 General cable C0720 From 1756 M02AS REG5V IN_COM 5 V dc Power Supply 5 Volt Registr...

Page 12: ...ovided for optional interface to an E stop string which controls power to the associated pumps The OK contacts are rated to drive an external 24V dc pilot relay for example Allen Bradley 700 HA32Z24 whose contacts can be incorporated into the E Stop string as in the following figure Figure 10 Wiring OK Contacts From 1756 M02AS HOME IN_COM 24 V dc Power Supply 43396 General cable C0720 From 1756 M0...

Page 13: ...closed the locking tab at the top of the module is unlocked WARNING When you connect or disconnect the Removable Terminal Block RTB with field side power applied an electrical arc can occur This could cause an explosion in hazardous location installations Be sure that power is removed or the area is nonhazardous before proceeding 20858 M Groove Groove Side edge of the RTB Side edge of the RTB Stra...

Page 14: ...an indicator test The OK indicator turns red for 1 second and then turns to flashing green if the module passes all its self tests Module Status Using the OK Indicator Figure 13 OK Indicator LED 20853 M 20854 M Module guide RTB guides Locking tab 1 Align the module and RTB guides to make sure the module will seat properly 2 Press quickly and evenly to seat the RTB until the latches snap into place...

Page 15: ...ed the module check the slot number in the 1756 M02AS Properties dialog box Steady green light One of the following Module is exchanging axis data The module is in the normal operating state None Flashing red light One of the following A major recoverable failure has occurred A communication fault timer fault or non volatile memory storage NVS update is in progress The OK contact has opened If an ...

Page 16: ...Take this action Off The axis is not used None if you are not using this axis If you are using this axis make sure the module is configured and an axis tag has been associated with the module Flashing green light The axis is in the normal servo loop inactive state None The servo axis state can be changed by executing motion instructions Steady green light The axis is in the normal servo loop activ...

Page 17: ...ault condition using the Motion Axis Fault Reset instruction Resume normal operation Steady red light An axis SSI feedback fault has occurred Correct the source of the problem by checking the SSI device and power connections Clear the servo fault condition using the Motion Axis Fault Reset instruction Resume normal operation If the FDBK LED displays The module status is Take this action CH0 CH1 FD...

Page 18: ...is type None if the axis is not used or is a position only type Otherwise make sure the module is configured an axis tag has been associated with the module and the axis type is servo Flashing green light The axis drive is in the normal disabled state None The servo axis state can be changed by executing motion instructions Steady green light The axis drive is in the normal enabled state None The ...

Page 19: ... at the drive Clear the servo fault condition using the Motion Axis Fault Reset instruction Resume normal operation Check the configuration for the Drive Fault If configured to be normally open and there is no voltage this is the normal condition If configured to be normally closed and 24V dc is applied this is the normal condition WARNING When you connect or disconnect the Removable Terminal Bloc...

Page 20: ...oving the module Figure 16 Removing the RTB Removing the Module Figure 17 Removing the Module 20855 M 2 Open the RTB door and pull the RTB off the module 1 Unlock the locking tab at the top of the module 42517 1 Push in top and bottom locking tabs 2 Pull module out of the chassis 20856 M 20857 M ...

Page 21: ...h Directional Scaling and Friction Compensation Velocity Loop N A handled by Drive or Valve 32 bit floating point 232 4 294 967 296 transducer counts 500Hz 666 7Hz 1kHz 2kHz 4kHz Selectable 250µsec 500µsec 1msec 1 5msec 2msec Module location 1756 ControlLogix chassis Module keying Electronic Power dissipation 5 5W maximum Thermal dissipation 18 77 BTU hr Backplane current 5 1V dc 700mA and 24V dc ...

Page 22: ...iod at which the position and or velocity feedback is sampled and a new servo loop is closed to generate a new servo output The time of this period is a user defined setting from 250μs to 2000μs All other inputs Type Input voltage Maximum Minimum on Maximum off Input impedance Optically isolated current sinking input 24V dc nominal 26 4V dc 17 0V dc 8 5V dc 7 5 kΩ Servo output Type Voltage range V...

Page 23: ...ting Temperature IEC 60068 2 1 Test Ad Operating Cold IEC 60068 2 2 Test Bd Operating Dry Heat IEC 60068 2 14 Test Nb Operating Thermal Shock 0 to 60 C 32 to 140 F Storage Temperature IEC 60068 2 1 Test Ab Un packaged Non operating Cold IEC 60068 2 2 Test Bb Un packaged Non operating Dry Heat IEC 60068 2 14 Test Na Un packaged Non operating Thermal Shock 40 to 85 C 40 to 185 F Relative Humidity IE...

Page 24: ...trol Equipment CSA CSA Certified Process Control Equipment for Class I Division 2 Group A B C D Hazardous Locations CE 3 European Union 89 336 EEC EMC Directive compliant with EN 50082 2 Industrial Immunity EN 61326 Meas Control Lab Industrial Requirements EN 61000 6 2 Industrial Immunity EN 61000 6 4 Industrial Emissions C Tick 3 Australian Radiocommunications Act compliant with AS NZS CISPR 11 I...

Page 25: ...ture le plus faible peut être utilisé pour déterminer le code de température global du système Les combinaisons d équipements dans le système sont sujettes à inspection par les autorités locales qualifiées au moment de l installation WARNING EXPLOSION HAZARD Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous Do not disconnect connections to this equip...

Page 26: ...omation com Installation Assistance If you experience a problem with a hardware module within the first 24 hours of installation please review the information that s contained in this manual You can also contact a special Customer Support number for initial help in getting your module up and running New Product Satisfaction Return Rockwell tests all of our products to ensure that they are fully op...

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