Door Communications Troubleshooting
HD-98 Door Operator with OST
34
Vertical Express
Door Communications Troubleshooting
If any of the following conditions are present, there is no communication between the 188E CPU
Card (CPU) and the EDR2 Electronic Door Operator Card (EDR2):
•
The doors are not working.
•
Remove the CON23 plug from the CPU while the system is powered up, and the STAT LED
on the CPU should blink 3 times. If not, no communication is present.
•
The OST adjustments for the door (E03-E56) display W0 as the values, and door faults will
not be viewable (no faults shown even if they exist in the door card).
If communications cannot be established between the CPU and the EDR2, perform the following
procedure to determine the cause:
1. Turn OFF, Lock, and Tag out the mainline disconnect.
2. Verify the fuses on the door card, and replace as necessary.
3. Remove the CON23 plug from the CPU.
4. Use an Ohm Meter and measure for 100 Ohms on the CPU, CON23, pins 1-2. If any other
measurement is seen, replace the CPU.
5. Use an Ohm Meter and measure for 125-135 Ohms on the CON23 plug–as it hangs loose–pins
1-2.
• If the measurement is correct, move to Step 8.
• If the measurement is not correct, continue with Step 6.
6. Place a temporary jumper on the CON23 plug, pins 1-2. Move to the car top with the Ohm
Meter, and then remove the DOC1A and DOC1B plugs from the EDR2.
7. Measure for a short (zero ohms) on the removed DOC1B plug, pins 1-2.
•
If the Ohm Meter does not display the short (zero ohms):
a. Find the wiring problem. See Figure 19.
b. Reconnect both DOC1A and DOC1B plugs to the EDR2.
c. Remove the temporary jumpers, and reconnect CON23 to the CPU.
d. Verify the door communications.
•
If the Ohm Meter displays the short (zero ohms):
a. Replace the DOC1A and DOC1B plugs onto the EDR2, and return to the machine room.
b. Remove the temporary jumper from the CON23 plug, and replace this plug onto the CPU.
8. Power up the disconnect.
9. Check for the proper door communications.
•
If communications do not work:
a. Use a volt meter on DC to measure voltage on the PSC and NSC terminals on the TCID
Card (located at the top of the controller).
Note:
A correct measurement is 2.25vdc to 2.75vdc (meter-averaged values of proper 5vdc
communications packet activity).
b. If the correct measurement is not seen, replace the EDR2.
