TTDM-128 Installation Instructions
3
Mounting the Enclosure
Install the enclosure using the four screws in the prepunched 8 mm (5/16-
inch) mounting holes with centers as shown in Figure 3. If plastic plugs
are in the mounting holes, remove them.
Make sure the rubber elastomer-
ic washers (provided in the shipping box) are aligned to seal around the
mounting screws to maintain the NEMA 12 and IP54 ratings.
Making Enclosure Entries Using the Removable Gland Plate
The removable gland plate
br
on the bottom edge of the enclosure pro-
vides a location to feed wires into the enclosure (Figure 4). The plate is
attached with eight screws. Unscrew these to remove the gland plate,
then you can drill or punch holes in the gland plate appropriate for your
application. There is sufficient width for up to five 1/2-inch or M20 holes.
Remove all metal filings and dust from the gland plate before remount-
ing. Take care not to damage the gasket on the gland plate. You must
secure the gland plate ground wire to the chassis ground lug after
remounting the gland plate.
Connect the power wiring.
•
Open door of TTDM enclosure.
•
For 120/220 Vac power supply: select the appropriate
voltage using the voltage selector switch
bo
.
•
Pass the power cable through the gland plate adapter/bushing into the
enclosure.
•
Connect the ground/earth wire to the ground/earth stud
bq
.
•
The ground/earth stud is marked with this symbol:
Note:
Proper grounding/earthing is important to avoid
the possibility of electromagnetic interference.
Note:
Ground/earth wire must be longer than the other two
conductors for strain relief.
•
Remove the power cable plug from the socket
bn
on the power supply
board
bl
.
•
Connect the power supply wires to the two-pin terminal block
bn
on
the power supply board. Use L2 for neutral, if present.
Note:
The terminals can accept wires 10 AWG (4.7 sq. mm) or smaller.
We recommend 12 AWG (3.0 sq. mm) wires, with branch circuit
protection sized accordingly. Cable should have a temperature
rating of 65°C minimum.
•
Insert the power cable plug back into the socket on the power supply
board
bl
.
38
39
L1
L2
VAC IN
Use L2
for neutral,
if present.
Do not
exceed
maximum
voltage
rating
120/240 Vac power supply
24 V power supply
bl
bn
Do not
exceed
maximum
voltage
rating
bl
bn
bo
110 2
20
Connecting the Power Cable and Relays
Gland plate
Gasket
Figure 4
Screws
Grounding wire to
attach to ground
lug in enclosure
terminal 62.
br
300 mm
(11.81 in)
Figure 3
261 mm
(10.26 in)
240 mm
(9.45 in)
200 mm
(7.87 in)
20 mm
(0.79 in)
20 mm
(0.79 in)
mounting hole
(four places)
8 mm (5/16 in)
Attachment points
for motherboard
(four places)
