Detcon X40-32-N7 - Manual (Page 25)

Model X40
Model X40 Instruction Manual Rev. 3.3 Page 19 of 64
at the unit when needed.
CAUTION
Equipment and equipment to be electrically connected shall use safety approved
wire/cable in conjunction with appropriate and compatible protective cable gland,
all of which meet the requirements of the max equipment rating (250VAC, 5A)
and any local electrical codes, regulations and standards. The cable used to
connect to the terminals of the X40-32-N4X must be rated for a minimum of
105ºC.
5. Install the DC power as follows:
a. Install external DC power by connecting the 11.5-30VDC to the terminals of the TB1 DIN
rail mounted terminal block labeled 24VDC and DC Comm (Figure 14). The equipment
supply wiring must be safety approved and rated for at least 7.5A.
NOTE
The cable penetration for the DC power must be made in the bottom of the enclosure (See
Figure 13). All penetrations must use a NEMA4 rated cable gland (Appleton P/N CG-2575
or equivalent) to prevent water ingress and restrict access to the internal circuits of the X40.
b. To maintain the safety approval for the X40, the user must install an external disconnect
switch or circuit breaker near the X40 so that it can be easily reached and labeled as the
disconnection device for the X40. The installed DC circuit breaker should be rated for 5A.
c. The unit does come equipped with Disconnect Terminal Blocks on the input power lines.
These can be used to connect or disconnect power at the unit.
VAC (L1)
NEU (L2)
DC Comm
24VDC
Disconnect
Terminal
Blocks
Figure 14 N4X AC/DC Inputs
6. Connect the external Modbus™ sensors at the RS-485 connections labeled RS-485 Master and
‘A’, ‘B’, and ‘Shld’ (Figure 15).
RS-485 VDC
Out
A B +
Figure 15 N4X RS-485 Master Port Connections
7. If 24VDC is required to power external sensors, connect the sensors to the power out labeled VDC
Out: ‘
+’ and ‘–‘.