Network Force/Torque Sensor System

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Net F/T Installation and Operation Manual Document: 9620-05-net ft-11 In case of any enabled threshold condition becoming true, the following will occur: • The threshold’s output code is updated. • Bit 16 of the system status code (see Section 18.2— System Status Code) will be set to one. • The threshold relay will close, connecting pin 3 to pin 4 of the Threshold Relay connector (see Figure 4.7—Standard Net Box Threshold Relay Connector Pin Assignment (Male-pin side view). Bit 16 and the threshold relay will hold these states until a reset latch command is sent. The reset latch command can be sent by clicking the Reset Latch button on the Snapshot web page. See Section 4.3— Snapshot Page (rundata.htm) for additional information. Threshold Condition Elements: N: Statement number. On / Off: Axis: Selects which statements are to be included in the processing of threshold conditions. Selects the axis to be used in the comparison statement. Available axes are: Table 4.2—Thresholding Statement Axis Selections Menu Value blank Fx Fy Fz Tx Ty Tz Comparison: Description Statement disabled Fx axis Fy axis Fz axis Tx axis Ty axis Tz axis Selects the type of comparison to perform. Available comparisons are: Table 4.3—Thresholding Statement Comparison Selections Menu Value Description > Greater Than < Less Than Counts: The loading level to be compared to the transducer reading. This value is displayed in the units of the active configuration after the Apply button is clicked. To determine the Counts value to use from a value in user units, multiply the value in user units by Counts per Force (or Counts per Torque if appropriate). Example: Desired Loading Level 6.25N Force Units:N (from Configurations page) Counts per Force value1000000(from Configurations page) Counts = Desired Loading Level × Counts per Force = 6.25 N × 1000000 counts/N = 6250000 counts NOTICE: Comparison levels are stored as counts and only change when the user inputs new counts values. Changing the configuration or the force units or the torque units will not change or adjust the counts values. Pinnacle Park • 1031 Goodworth Drive • Apex, NC 27539 USA • Tel: +1.919.772.0115 • Fax: +1.919.772.8259 • www.ati-ia.com • Email: info@ati-ia.com B - 36
Net F/T Installation and Operation Manual Document: 9620-05-net ft-11 Units: Output Code: Reset Latch button: Displays the counts value in the units of the active configuration. This value is only updated after the Apply button is clicked. When this statement’s comparison is found true, this 8-bit value will be bitwise or’ed with the Output Code values of all other true statements to form the threshold output. Any set bits remain latched until Reset Latch is called. If no statements have been true the threshold output will be zero. The value is displayed in hexadecimal in the format 0x00. Output codes may be entered in the hexadecimal format or they may be entered in decimal. Clears any threshold latching and reloads the Thresholding page. If no threshold conditions remain true then Thresholds Breached, Thresholds Output, and Threshold Latched will all be set to zero and the System Status: Threshold Level Latched condition will be cleared. 4.6.1 Threshold Relay The threshold relay closes its contacts when Threshold Latched is true. This allows external electrical equipment to react when this occurs. Possible uses include control of E-stop circuits. Relay operation is determined by the Relay Trigger, Relay Behavior, and Relay Momentary Minimum-On Time settings. For increased reliability, it is best to monitor both the normally open (NO) and normally closed (NC) relay contacts. This allows detection of some cabling or relay issues. The threshold relay contacts (NC, NO, and COM) are protected against overload by a resettable fuse, see Section 19.3.4—Standard Threshold Relay for electrical specifications. 4.6.1.1 Standard Net Box Threshold Relay The standard Net Box threshold relay is a mechanical relay. (The fieldbus Net Box has the solid-state relay described in Section 4.6.1.2—Fieldbus Net Box and Optional Solid State Threshold Relay). Figure 4.7—Standard Net Box Threshold Relay Connector Pin Assignment (Male-pin side view) Table 4.4—Solid-State Relay Connector Pin Descriptions Pin Name Description 1 NO Normally open connection 3 NC Normally closed connection 4 Com Common CAUTION: The solid-state relay connections are polarity dependent. A reverse-polarity connection could cause high current flow and damage the Net Box or user equipment. Pinnacle Park • 1031 Goodworth Drive • Apex, NC 27539 USA • Tel: +1.919.772.0115 • Fax: +1.919.772.8259 • www.ati-ia.com • Email: info@ati-ia.com B - 37
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Network Force/Torque Sensor System

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