|
|
|
Printable Page
|
|
#2015 Installation of the PC642 Series
| PC642 TERMINAL ASSIGNMENTS |
 |
|
|
| EXAMPLE ILLUSTRATION DIAGRAM 1 |
 |
|
| EXAMPLE ILLUSTRATION DIAGRAM 2 |
|
| EXAMPLE ILLUSTRATION DIAGRAM 3 |
|
PROPER WIRING OF THE PC642
Question:
Does it make a difference how the PC642 is wired into the circuit?
Answer:
Yes. The PC642 must be wired "IN LINE" with your signal pairs. This means that the pair must be "broken" and the PC642 placed in series with the pair.
Question:
How do I connect the pairs to the PC642 base?
Answer:
The protector has an unprotected side (strong side) and a protected side (fast side). The protector base consists of odd-numbered (3,5,7,9) screw connections to terminate the field wiring (away from protected equipment). The protector base also consists of even-numbered (2,4,6,8) screw connections to terminate the wiring to your sensitive equipment.
Question:
After I wire the protector base, how do I know the PC642 is plugged in correctly?
Answer:
A key pin should be located between positions 1 and 2 of the protector base (PCB1B). Verify that the key pin is in the proper position.
Question:
What happens if the PC642 is plugged in backwards?
Answer:
You will experience premature protector failure, and possibly damage to your equipment.
|
PROPER GROUNDING OF THE PC642
Question:
I notice that screw connections 1 and 10 are both labeled "GROUND." Do I need to connect both to ground?
Answer:
No, 1 and 10 are internally connected, so connect only 1 or 10 to ground.
Question:
I have several PC642 protectors to install. Can I daisy chain grounds, to screw connection 1 to screw connection 10 of the next unit?
Answer:
ABSOLUTELY NOT. Each PC642 protector must have a ground wire connected to the local (at equipment) ground bus.
Question:
Where do I connect the ground wire?
Answer:
To the power ground (green wire ground) of the protected equipment.
Question:
Does the ground wire length make any difference? If so, how long?
Answer:
Absolutely, the shorter the better. Keep the ground wire less than 1 foot.
Question:
I understand that, but where is a convenient place to connect it?
Answer:
A good question. Implementing a short ground can be a problem, but it is critically important. EDCO has developed some AC suppressors with a convenient ground lug built in (i.e., TS-1200G, see TS-1200 Series). This ground wire from the PC642 should connect to the ground lug on the AC Suppressor, or should be bonded to chassis ground. Make sure a good clean metal contact is made, and make sure green wire ground is connected to the chassis.
Question:
Suppose I can't keep the ground wire less than 1 foot?
Answer:
The data or signal pair may have to be rerouted to a location where the PC642 suppressor is located near the AC power outlet.
Question:
What about my panel that has no AC power supplied to it, power is supplied down the signal conductors. How do I ground the PC642s?
Answer:
Bond to the closest building approved ground point. Also provide surge protection between signal conductors and the ground conductor.
Question:
Can I run ground wires inside metal conduits?
Answer:
Yes, but only if the ground wire is bonded to the conduit at each end. See illustration below.
|
|
|
|
|
|
