
Quick-Change
Installation and Operation Manual
Document #9620-20-c-vb12m vb13m vb12t-05
Pinnacle Park
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1031 Goodworth Drive
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Apex, NC 27539
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Tel: 919.772.0115
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Fax: 919.772.8259
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www.ati-ia.com
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Email: [email protected]
C - 6
1.3.1 Master Free of Stand, Tool in the Stand
The Master is away from the Tool Stand and the Tool is in the Stand. In order to allow the
Tool Changer to uncouple when the Tool is not present, a Tool Presence relay circuit is
utilized. This relay circuit is located in the Master module and is triggered by electrical
contact between the Master and Tool. When there is no electrical contact, indicating no Tool
Presence, then the relay circuit is closed, allowing Unlatch power to be supplied to the
solenoid valve.
Figure 1.6—Master Free of Stand, Tool in the Stand