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OP8640 System Description and Operation
- Sylvain Ménard
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The OP8640 is an emergency safety panel, allowing immediate shutoff of devices connected to it.
Up to three devices can be connected to the OP8640. The standard configuration includes a breaker interface for two devices; the third connection interface is optional.
It is designed to fit into a 19'' standard rack. The connection with the external devices are managed with connectors at the back, and the user interface features (emergency stop button, breakers, status LEDs) are located on the front interface.
Front Interface
A | ON/OFF switch | Main Power ON button of the unit |
|---|---|---|
B | 24V breaker | Internal power supply breaker provides a reset function in case of an internal short circuit. |
C | POWER ON | Status LED. Turns on when the OP8640 is powered up and functioning. |
D | Breakers and LEDs | Individual breakers for each device.
Breakers trip in case of any short-circuit. L1 and L2 LEDs show the condition for each connected device. The OP8640 can control up to 3 devices, however, the standard configuration contains only L1 and L2. L3 is optional and must be requested at the time of order. |
E | EMERGENCY STOP | This button allows the operator to interrupt power to all connected devices immediately. Once pressed, the button can be reset simply by twisting it to release. |
Back Interface
A | Lx OUT | Numbered 1 through 3, these connectors are used to plug the external devices to the OP8640. If only one device is connected, it must be connected to L1 OUT. |
|---|---|---|
B | EXTERNAL SWITCHES | These switches connect a remote switch to the device: useful when working at a distance from the device while needing control in emergency situations, or to connect a switch to rack doors for safety reasons. |
AUX CONTACTS | These screw terminals allow the operator to connect to external monitoring devices. A “contact” signal indicates the line is open and the equipment under test is powered off; a “not connected” signal indicates the line is closed, and the connected unit is powered up. | |
C | Ground symbol | Ground screw for proper grounding of the unit. |
D | Lx IN | Numbered 1 through 3; these power plugs care used to supply power to the devices protected by the OP8640. Switches above each plug let operators control power input directly on the OP8640, rather than unplugging from the power outlet. |
Connection and Operation
There is no specific sequence to respect for connecting devices to the OP8640.
The following connections may be performed in any order without negative impact:
Connect all applicable devices to the L1, L2 or L3 OUT plugs. If there is only one device, it must be plugged into L1 OUT.
Plug power cables between each Lx OUT connection used and power sources.
Connect the ground wire to the ground connector.
If applicable, connect the remote control cable to the EXTERNAL SWITCHES terminal and turn the Bypass switch to on.
If applicable, connect external monitoring devices to AUX CONTACTS terminals.
While in use, if the operator fears that the external devices may be damaged or that fault conditions exist, press the EMERGENCY STOP button to interrupt all power to the connected devices.
When conditions return to normal, the breakers must be reset and the EMERGENCY STOP button must be twisted to release it.
OPAL-RT TECHNOLOGIES, Inc. | 1751, rue Richardson, bureau 1060 | Montréal, Québec Canada H3K 1G6 | opal-rt.com | +1 514-935-2323
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