Ross NK-RP1 Series, Руководство пользователя

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18 • Physical Installation NK-RP1 Series User Guide (v2.0)
Configuring the GPI Alarm
The NK-RP1/P provides two GPI alarms to indicate the status of the two main +15V power supplies. If a power
supply fails, the associated GPI pin is shorted to ground. Under normal operation, the GPI output is open.
Figure 3.5 NK-RP1 Series Rear Panel — GPI Alarm Pin Assignment
Replacing the Power Supplies
The Power Supplies are accessed via the front of the NK-RP1 Series chassis and requires that you remove the door
first. The door is secured to the front of the chassis with a rare earth magnet on each side.
To remove the door from the chassis
1. Disconnect the AC power cord of the failed power supply.
2. With your left hand, grasp the top and bottom of the door at the left sides.
3. With your right hand, grasp the top and bottom of the door at the right side.
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If you are having trouble removing the door from the chassis, you can insert a flathead screwdriver into the notch
on either side of the door for added leverage.
4. Pull the right side of the door towards you to disengage it approximately 1.0” from the chassis.
5. Pull the left side of the door towards you to fully disengage the door from the chassis.
6. Note the location of the Power Supply Retaining bar ( Figure 3.6 ). You will need to remove it before accessing
the power supplies inside the chassis.
Figure 3.6 NK-RP1 Series — Door Removed from Chassis
To remove the retaining bar from the chassis
1. Unscrew the two thumbscrews on the power supply retaining bar.
2. Remove the power supply retaining bar.
ESD Susceptibility
— Static discharge can cause serious damage to sensitive semiconductor
devices. Avoid handling circuit boards in high static environments such as carpeted areas and when
synthetic fiber clothing is worn. Always exercise proper grounding precautions when working on circuit
boards and related equipment.
Caution
— Pull the door off without twisting or rotating it at too steep of an angle.
Retaining Bar