ACU-RITE User’s Manual CSS I/O English (en) 2/2010 ®
I General Information ..... 4 Connecting the CSS I/O to X101 (turning) ..... 4 I - 1 Execution of Switching Functions ..... 5 Switching inputs ..... 5 Switching outputs ..... 5 I - 2 Spindle Speed Control (RPM) ..... 8 Milling Systems ..... 8 Display ..... 8 Mill Spindle Installation setup ..... 9 Voltage Offset / RPM Source ..... 10 Voltage / RPM Setup ..... 11 Operation / Job Execution ..... 12 Mill Spindle Feature Run ..... 13 Mill Spindle Program Run .....
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Operating Instructions CSS I/O 3
General Information General Information Connecting the CSS I/O to X101 for executing switching functions (milling) or controlling the constant surface speed CSS (turning) When the CSS I/O is connected to DRO’s that support this feature, the functionality described above are available. Contact an authorized Acu-Rite product distributor for more information.
I - 1 Execution of Switching Functions I - 1 Execution of Switching Functions If you want to use both the CSS I/O and the KT 130 edge finder at the same time, or if you want to transmit measured values via the external switching output, the distribution cable with ID 593761-01 is required. Switching inputs The CSS I/O provides four inputs that are used to zero the actual value of the assigned axis. A low-to-high transition at the input causes the value for that axis to be set to zero.
I - 1 Execution of Switching Functions 8 8 8 The CONDITION field is used to assign an axis to the output and to specify whether the axis position is an actual-value or distance-to-go position. You also specify the position display value at which the relay is activated, and the required condition. The POINT/RANGE field is used to define whether the conditions refers to a point on the axis or refers to a range about zero.
I - 1 Execution of Switching Functions In PULSED mode, the relay is activated (ON or OFF) for a specific period of time. After the period has timed out, the relay is deactivated. The pulse time is 0.1 to 999 seconds. Relay Continuous mode shown: The time period begins whenever the switching condition transitions from FALSE to TRUE. If the switching conditions transitions to TRUE before the period has timed out, the timer will start over.
I - 2 Spindle Speed Control (RPM) I - 2 Spindle Speed Control (RPM) Milling Systems The Mill Spindle Speed Control is for milling systems only, and provides an open loop spindle speed control. The spindle speed control requires the CSS I/O box. The spindle speed control is only available for milling systems. If the DRO is configured for a turning system, then no Spindle Settings will be displayed. 8 Define the last axis as a rotary encoder axis. Display 8 Define the display as a speed display.
I - 2 Spindle Speed Control (RPM) Mill Spindle Installation setup The configuration parameters are found under Installation Setup. The Spindle Settings only appear in the list if the CSS I/O box is detected. 8 Select Spindle Settings from the Installation Setup menu, and press the ENTER key. The spindle (RPM) status field allows the user to enable, or disable the spindle (RPM) fuctionality. If it is disabled, then no spindle (RPM) operations are available for usage.
I - 2 Spindle Speed Control (RPM) Voltage Offset / RPM Source The voltage offset field is used to adjust for any inherent offset in the DAC output. This value is added to the calculated DAC output. Use a voltmeter to measure the actual voltage at the DAC output. Press the INCREASE, or DECREASE soft key to adjust the offset until the output is 0 V. The offset range is limited to 0 - 50, (approximately 0 - 122 mV).
I - 2 Spindle Speed Control (RPM) Voltage / RPM Setup The voltage setup fields are used to establish the relationship between the DAC output signal (0 - 10 V), and the spindle speed for each gear. 8 8 Enter min, and max voltage levels for each gear. Press ENTER to save the settings, and exit the form, or press the C key to exit without saving the changes. This screen allows the spindle to have min, and max RPM settings defined. This limits the spindle not to exceed the limits set at start up.
I - 2 Spindle Speed Control (RPM) Operation / Job Execution The operation of the Mill Spindle is associated with the use of the selected tool from the tool table, and the spindle parameters for running the tool. Refer to the DRO User’s Manual for setting up, and using a tool from the tool table. 8 8 Select the desired tool from the tool table. Press ENTER to open the tool setup form.
I - 2 Spindle Speed Control (RPM) A tool can be run from the tool table, or by pressing enter after defining the spindle parameters for a tool. Mill Spindle Feature Run With all tool, job, and installation setups entered, the Mill Spindle job can be run by toggling the Spindle ON/OFF soft key. Select the tool to be used, and the required gear. The spindle speed can be adjusted using the SPEED +/- soft keys.
I - 3 Controlling the Constant Surface Speed (CSS) I - 3 Controlling the Constant Surface Speed (CSS) In CSS mode, a constant surface cutting speed can be maintained on a lathe. The following functions are available: CSS mode: The DAC output signal provides constant surface speed by adjusting the spindle speed as the diameter (radius) of the workpiece changes. Direct entry of spindle speed: The DAC output signal sets the spindle speed based on the value entered via the numeric keypad.
I - 3 Controlling the Constant Surface Speed (CSS) Configuration of CSS To use the CSS functionality, the last axis must be defined as a rotary axis. Define the display as a speed display, and configure them accordingly. The spindle control configuration parameters are set up in the INSTALLATION SETUP menu.
I - 3 Controlling the Constant Surface Speed (CSS) CSS operating mode The operating parameters are set in the CSS / DIRECT RPM form. 8 Press the CSS SETUP soft key to open the form or select the parameter from the JOB SETUP menu. The SETTINGS field is used to select the mode of operation and the control settings. The spindle is controlled by selecting CSS or by entering the spindle speed directly. The values to be entered depend on the selected option.
I - 3 Controlling the Constant Surface Speed (CSS) Activating the DAC output After selecting the operating mode and entering its parameters, the DAC output must be enabled to begin controlling the spindle. The output to the spindle inverter drive is an open loop signal. The system does not monitor the actual spindle speed. The output signal is based solely on the inverter's speed input versus the input voltage profile.
TURNING APPLICATION 1Automatic CSS/Pot Control CSS I/0 OUT 789 OUT 7 OUT 8 IN 0 IN 0+ IN 1 IN 1+ IN 2 IN 2+ IN 3 IN 3+ INVERTER FWD X1039 X10310 OFF X10311 REV X1021 X1022 + X1023 GEAR 1 X1024 X1025 INPUT+COMMON FORWARD 1224 VDC 100 mA I - 3 Controlling the Constant Surface Speed (CSS) Connecting the CSS I/O to the inverter of the lathe REVERSE MANUAL RPM ANALOG SUPPLY GEAR 2 X1026 X1027 X1028 ANALOG INPUT GEAR 3 X10211 DAC OUT X10212 COMMON ANALOG COMMON Example
I - 4 Diagnostics I - 4 Diagnostics General Information When the CSS I/O box is connected to the DRO, the DIAGNOSTICS menu under INSTALLATION SETUP provides further diagnostic possibilities. The information available varies depending on the configuration of the system, Switching I/O, CSS, or Mill Spindle functions.
I - 4 Diagnostics CSS, and Mill Spindle CSS / MS DIAGNOSTICS shows the status of the communication via the CAN bus and the state of the DAC output to provide monitoring of the interfaces for operation with constant surface speed, (or Mill Spindle). The state of the switching inputs and outputs is also shown. The CAN STATUS field shows the state of the bus communication between the DRO, and the CSS I/O, (or Mill Spindle and I/O).
I - 4 Diagnostics For CSS only, the MS INPUT/OUTPUT field shows the state relay outputs. The IN: field of the switching inputs is not used, and will be blank. The status information has the following meaning: Information about the inputs Meaning EXT External switch is active (X102-12) G1 Switch for gear 1 is active (X102-3,4) G2 Switch for gear 2 is active (X102-5,6) G3 Switch for gear 3 is active (X102-7,8) The following table applies to both CSS, and RPM.
I - 4 Diagnostics 22 I Operating Instructions
Index A Activating the DAC output ... 17 C Configuration of CSS ... 9, 15 Connecting the CSS I/O to the inverter of the lathe ... 18 Connecting the CSS I/O to X101 ... 4 Controlling the constant surface speed (CSS) ... 8, 14 CSS ... 20 CSS DIAGNOSTICS ... 20 CSS operating mode ... 16 D Diagnostics ... 19 E Execution of switching functions ... 5 G General Information ... 4, 5 M Mill Spindle Installation setup ... 9 Mill Spindle Job Run ... 13 O Operation / Job Execution ... 12 R Relay status ...
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