ONICON D-100 Flow - Manual (Page 21)

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D-100 Flow Display Manual 10/14 - 0634-14 / 18340 Page 21
3.3.9 Input Power
The D-100 can be ordered from the factory with input voltages of 24VAC 50/60Hz,
120 VAC 50/60 Hz or 240 VAC 50 Hz. Please note that these are not field selectable
options. Confirm that the correct input voltage configuration has been provided prior to
making any connections.
WARNING
Conduit openings in the D-100 enclosure must be closed with UL listed fittings applicable to
NEMA 13 enclosures, and mains voltage connections must be made through the pre-drilled
conduit/strain relief opening located at the bottom of the enclosure. Failure to do so will result
in an increased risk of injury.
!
WARNING / CAUTION
The protective earth connection must be made as shown. Failure to do so will result in an
increased risk of injury and erratic operation.
!
Connect the power source to the D-100 through the conduit opening located on the
bottom of the enclosure. Attach the wires to the appropriate screw terminals as shown.
Connect the protective earth wire to the earth lug shown. Do not exceed 13 in-lb (1.5 Nm)
of torque when tightening.
As power is initially applied to the D-100, immediately confirm that the “power” light
is illuminated and the display is scrolling throught the character diagnostic test. The
test will begin by indicating the letter P in every position followed by a countdown from
9 to 0 for each digit. If this does not occur, disconnect power immediately and re-verify all
wiring connections. Contact ONICON if the problem persists.
Operating from 120 or 240 VAC mains power
Utilize an electrically clean power line, free of electrical noise and protected from high
voltage spikes, power surges, and brownouts. The power source should be a separate line
with its own circuit protection device. Refer to Section 1.3 of this manual for the
appropriate overcurrent device ratings. Use a 3-wire service in which one wire is a
protective earth ground.
27 OHM 5%
3W
TB1
AMP
1/4 F1
1
H1
D3
D4
TB1
1/4 AMP F1
VAR1
D2
D1
T1
LED1
20075-50 REV. A
R1
H3
R7
10
G G
J2-12
+24 +15
J2-1 1
60 HZ G
5
J1 L1 N Not Used
L1 N
Not Used
Earth Connection
Input Power Connection