WEB/CP-202-XPR AND WEB/CP-602-XPR CONTROLLERS
95-7775—01
14
EARTH GROUND AND 24V INPUT POWER
After mounting the unit, wire earth ground and 24 Vac or 24 Vdc to the terminals under the power input shield.
NOTE: If powering from a 24V transformer, do not power any other equipment with it. Otherwise, conducted noise problems
may result. Do not ground either side of the transformer’s 24V secondary.
WARNING
Disconnect power
from the 24V input source before making wiring terminations. Do not reconnect power until
other wiring is complete.
Note this device has no power-on switch. See Power Up and Initial Checkout on page 23.
Fig. 7. Wire Earth Ground and 24 Vac or 24Vdc to power input terminals.
Wiring earth ground and 24V power to controller power supply.
1.
If not already removed, remove the
right
cover. See
Removing and Replacing the Covers
on page 8.
2.
Remove the shield over the 3-position terminal block (see Fig. 7, left) and carefully set it aside.
3.
Route 24V power and ground wiring either through the rear (oval) knockout, or thought the hole directly below the
3-position terminal block.
a. Wire nearby earth ground to the “G” (ground) terminal, using 14 AWG or larger wire.
b. Wire 24V power to the “N” (neutral) and “L” (line) terminals.
4.
Replace the shield over the 3-position terminal block.
If wiring is through the back oval knockout, install an end plug into the hole below the terminal block (see Fig. 7, right).
5.
Replace the right cover when finished with all wiring.
NOTE: After connecting earth ground to the “G” terminal, earth ground is available on the 10-position grounding terminal strip,
located near the top of the wiring area. See Fig. 6 on page 11.
Use this 10-position strip for terminating the shield (drain) wire on shielded cables that connect I/O sensors and remote
communications ports.
REAR KNOCKOUT
OR LOWER HOLE
RIGHT COVER REMOVED.
REMOVE SHIELD TO WIRE
THE EARTH GROUND AND
24 V POWER.
M28869
14 AWG
MINIMUM
EARTH
ROUND
LINE VOLTAGE
(MAINS)
24 VAC
24 VDC
G
N
H
DEDICATED 24 VAC
TRANSFORMER WITH
NEITHER SIDE OF
SECONDARY TIED
TO EARTH GROUND
24 VDC POWER SUPPLY
(POLARITY NOT CRITICAL)
NEITHER SIDE OF
SECONDARY TIED
TO EARTH GROUND
+
–
OR
REPLACE SHIELD
AFTER WIRING THE
EARTH GROUND
AND 24 V POWER
INSTALL
BOTTOM PLUG
IF WIRING
THROUGH
BACK (OVAL)
KNOCKOUT
REAR KNOCKOUT
OR LOWER HOLE
