McPHERSON'S 789A-4 Instruction Manual

Scan controller

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INSTRUCTION MANUAL

Model 789A-4

Scan Controller

Serial Number: ___________________

7A Stuart Road  Chelmsford, Massachusetts 01824

PHONE: 978-256-4512 / 1-800-255-1055

FAX: 978-250-8625

EMAIL: MCP@mcphersoninc.com

WWW: http://www.mcphersoninc.com

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Summary of Contents for McPHERSON'S 789A-4

Page 1 INSTRUCTION MANUAL Model 789A-4 Scan Controller Serial Number: ___________________ 7A Stuart Road  Chelmsford, Massachusetts 01824 PHONE: 978-256-4512 / 1-800-255-1055 FAX: 978-250-8625 EMAIL: MCP@mcphersoninc.com WWW: http://www.mcphersoninc.com...
Page 2 Motor Direction section located in the 789A-4 Instruction Manual for motor reversal.  If your system has a single 789A-4 Controller matched to an instrument, it should be factory configured for correct operation.  If your system has multiple 789A-4 Controllers they will be labeled for their assigned instruments.
Page 3: Table Of Contents
Model 789A-4 Scan Controller CONTENTS NOTICE ..................................4 IMPORTANT NOTICE .............................. 5 1.1 F ................................6 EATURES 1.2 S ................................6 OFTWARE INSTALLATION ................................. 7 2.1 F ............................7 EPLACEMENT 2.2 C ..............................7 ONNECTIONS EXPLANATION OF FRONT PANEL ........................9 3.1 F...
Page 4: Notice
Model 789A-4 Scan Controller NOTICE THIS EQUIPMENT HAS BEEN CAREFULLY PACKAGED FOR SHIPMENT, AND THE TRANSPORTATION CARRIER IS RESPONSIBLE FOR DELIVERY TO YOU IN GOOD CONDITION. If the shipment is NOT delivered in good condition and in accordance with quantity shown on the Bill of Lading or Packing Slip, note the shortage or damage on both the delivery receipt and freight bill, or use the special form provided by United Parcel Service or the Post Office.
Page 5: Important Notice
Model 789A-4 Scan Controller IMPORTANT NOTICE ELECTRICAL EQUIPMENT MAY BE DANGEROUS IF NOT HANDLED WITH CAUTION. ALL INSTRUMENTS SHOULD BE OPERATED WITH PROPER GROUNDS ON POWER LINES. ELECTRICAL OR ELECTRICALLY OPERATED COMPONENTS SHOULD NOT BE EXPOSED OR HANDLED WITHOUT BEING SWITCHED OFF AND DISCONNECTED FROM THE POWER LINE.
Page 6: Features
SECTION 1 INTRODUCTION The Model 789A-4 scan controller is a high resolution stepper system designed to control and drive McPherson Spectrometers and a variety of other motor driven devices Easy to program and operate, this scanning system precisely positions gratings or other devices requiring accurate control.
Page 7: Installation
Model 789A-4 Scan Controller SECTION 2 INSTALLATION 2.1 Fuse Replacement To replace the fuse: 1. Locate and remove the fuse slot cover (see Rear Panel diagram below 2. Replace with the following fuse: 2A/250V, SLO-BLO, 5 x 20mm. This fuse is used throughout the 100 to 240 VAC range.
Page 8 789A-4 RS232 Important! One USB to RS232 Converter is included with the 789A-4 for newer computers without RS232 COM Ports. Please take the time to read the accompanying literature. Use the supplied CD to install the converter’s drivers. Your computer’s Device Manager is used to configure the port settings created by the converter.
Page 9: Explanation Of Front Panel
EXPLANATION OF FEATURES 3.1 Front Panel Power Switch Connects/Disconnects Power to the 789A-4 Controller. Dual colored LED's for high and low limits. LED will show green if Limit Switch limit switches are operating normally. LED will show red if limit is engaged or not connected properly.
Page 10: Setup
If your 789A-4 was purchased with an instrument or device, the default direction has been factory set. Important! If the 789A-4 is part of a retrofit kit, the default direction should always be verified before performing any scans. 1) If possible, manually rotate the motor at least 3 turns toward the center of the leadscrew’s travel.
Page 11: 789A-4 Grating Selection
Model 789A-4 Scan Controller 4.3 789A-4 Grating Selection Select the instrument(device) from the table below. 789A-4 Grating Selection Table Grating, nm/Motor Monochromator model g/mm Rev. 205, 207, 209, 216.5,218, 219, 213, 235, 2051, 2061, 2062, 2062M3 1200 (S/N 100 & above) 1800 2.66...
Page 12 Model 789A-4 Scan Controller Grating, Monochromator model nm/Motor Rev. g/mm 12.5 1140 1710 37.5 2280 225, 241 2253M5 1200 1800 1.66 2400 1.25 3600 0.83 X-RAY CZERNEY- TURNER (XCT) 1200 1800 0.66 2400 3600 0.33 , 270 1200 1800 01.33...
Page 13: Operation
For best results: 1) Follow the setup procedures when operating for the first time. 2) Always perform the Homing Procedure anytime power is disconnected from the 789A-4. 3) Consult the McPherson Spectrometer Software manual. 4) If you are not using the McPherson software, follow the Command Summary starting on the next page.
Page 14: A Homing Procedure
Model 789A-4 Scan Controller 5.2a Homing Procedure Apply power to 789A-4 Controller and send ASCII [Spacebar] to initialize the 789A-4 COM port. 2) See the Homing Table below. Finding Home Position with Home Switch Blocked Line Command Explanation Notes Enable Home Circuit...
Page 15: 789A-4 Command Summary
Model 789A-4 Scan Controller 5.3 789A-4 Command Summary Result(s) Command Description ASCII DECIMAL This command must be entered first after power-up. [SPACE] 0x20 Initialize Enables communication with scan controller. If using a terminal program, pressing the "space bar" will achieve the same result. The...
Page 16: 789A-4 Command Summary (Continued)
Model 789A-4 Scan Controller 5.3 789A-4 Command Summary (continued) Result(s) Command Description ASCII DECIMAL Acceleration /deceleration factor. Value less than 127 will result in both acceleration and deceleration having the same slope. Entering 0x4B Ramp Slope 2 values will set the acceleration slope to the first value and the deceleration slope to the second value.
Page 17: 789A-4 Command Summary (Continued)
Model 789A-4 Scan Controller 5.3 789A-4 Command Summary (continued) DECIMA Command Description Result(s) 0 = No motion detected. Read Moving 1 = Moving 0x5E Status 2 = High in constant velocity. 16 = Slewing - Ramping complete. 5.4 Calculating Velocity Parameter To calculate motor velocity parameter: Refer to Grating Selection Chart.
Page 18: Sample Program
Model 789A-4 Scan Controller 5.5 Sample Program To scan a Model 207 monochromator with 1200 G/mm grating at a rate of 100 nM/minute over a range of 40 nM, then change direction and slew back to Object: starting wavelength at a rate of 400 nM/minute.
Page 19: Appendix
Model 789A-4 Scan Controller Appendix Warranty and Assistance, Warranty Exceptions, and Returning Goods Warranty and Assistance McPherson products are warranted to be free from defects in material and workmanship and conform to the specifications furnished by the company at date of delivery. The company’s obligation under this warranty is limited to servicing, adjusting, or repairing or replacing any McPherson made part or parts thereof, returned to the factory or in the field.
Page 20: Warranty Exceptions
Model 789A-4 Scan Controller Warranty Exceptions The warranty will not apply in case of any misuse, neglect of instructions and violations of the policy. Furthermore, the performance of systems assembled by the customer which incorporate McPherson parts, supplies or instruments is not covered by this warranty. The following indicate other exceptions to the one year warranty.
Page 21: Returning Goods
Model 789A-4 Scan Controller Returning Goods Please observe the following procedure when returning goods: Obtain a return material authorization (RMA) number from McPherson. This number must appear on the outside of the package returned. For WARRANTY repairs obtain an RMA Number.