Series M22/M23/M24 Instruction Manual
Chapter 2 Installation
M-000-00010
2-27
High Power Meter Wiring Connections
The NEMA 4X enclosure contains an integral wiring compartment with
one dual strip terminal block (located in the smaller end of the enclosure).
Two 3/4-inch female NPT conduit entries are available for separate power
and signal wiring. For all hazardous area installations, only suitable certi-
fied cable glands, blanking plugs or thread adapters may be used. The ca-
ble entry device shall be of a certified flameproof type, suitable for the
conditions of use and correctly installed. The degree of protection of at
least IP66 to EN 60529 is only achieved if certified cable entries are used
that are suitable for the application and correctly installed. Unused aper-
tures shall be closed with suitable blanking elements. If conduit seals are
used, they must be installed within 18 inches (457 mm) of the enclosure.
4-20
mA 3
AC
PWR
IN
4-20
mA 1
24
VDC
OUT
+
-
+
4-20
mA 2
-
+
-
+
R
S
48
5
R
S
48
5
R
S
48
5
G
N
D
-
OPTION 2
+
ALARM
2
H
O
T
/ L
1
PULSE
OUT
N
E
U
T
/ L
2
FREQ
OUT
+
-
+
ALARM
1
-
+
-
4
OPTION 1
1 2 3
1
5
2 3
ALARM
3
-
+
-
4 5
+ -
Figure 2-25. AC Wiring Terminals
Input Power Connections
To access the wiring terminal blocks, locate and loosen the small set
screw which locks the small enclosure cover in place. Unscrew the cover
to expose the terminal block.
AC Power Wiring
The AC power wire size must be 20 to 10 AWG with the wire stripped
1/4 inch (7 mm). The wire insulation temperature must meet or exceed
90°C (194°F). Connect 100 to 240 VAC (5 W maximum) to the Hot and
Neutral terminals on the terminal block. Connect the ground wire to the
safety ground lug. Torque all connections to 4.43 to 5.31 in-lbs (0.5 to 0.6
Nm). Use a separate conduit entry for signal lines to reduce the possibility
of AC noise interference.
100 to 240 VAC, 50/60 Hz, 5 Watts Max.
Chassis screw safety
ground must be used
for proper operation.
Hot / L1
Neutral / L2
Figure 2-26. AC Power Connections
Warning!
To avoid potential electric shock, follow
National Electric Code safety practices or
your local code when wiring this unit to a
power source and to peripheral devices.
Failure to do so could result in injury or
death. All AC power connections must be
in accordance with published CE direc-
tives. All wiring procedures must be per-
formed with the power off.
A power switch is not provided with this
meter, an approved switch meeting the
power requirements listed in Appendix A
must be provided by the user. It must be
easily accessible and marked as the dis-
connect for the flow meter.
Only the connectors supplied with the me-
ter are to be used for connecting wiring.
If the equipment is used in a manner not
specified the protection provided by the
equipment may be impaired.
Caution!
The AC wire insulation temperature rating
must meet or exceed 90°C (194°F), max-
imum operating voltage 600 VRMS.
Summary of Contents for Pro-T
Page 10: ...Table of Contents Series M22 M23 M24 Instruction Manual 0 10 M 000 00010...
Page 20: ...Chapter 1 Introduction Series M22 M23 M24 Instruction Manual 1 10 M 000 00010...
Page 60: ...Chapter 2 Installation Series M22 M23 M24 Instruction Manual 2 40 M 000 00010...
Page 126: ...Chapter 5 Troubleshooting Repair Series M22 M23 M24 Instruction Manual 5 16 M 000 00010...
Page 140: ...Appendix B Approvals Series M22 M23 M24 Instruction Manual B 4 M 000 00010...
Page 150: ...Appendix D Glossary Series M22 M23 M24 Instruction Manual D 4 M 000 00010...
