DC Power Connections
The transmitter may be operated from a 10…28V DC source, as
long as the source is capable of supplying a minimum of 5 Watts
of power.
Connect the DC power to 10…28V DC In, power ground, and
chassis ground, as in Figure 7.
OTE:N DC-powered transmitters are protected by an
automatically resetting fuse. This fuse does not
require replacement.
For CE compliance, a Class 2 DC power supply is required.
10 - 28 VDC
Power Gnd.
Downstream
Upstream
+
+
-
-
Modbus
TFX Rx
TFX Tx
1 2 3 4
O
N
Signal Gnd.
Control 1
Control 2
Frequency Out
4-20 mA Out
Reset Total
RS485 Gnd
RS485 A(-)
RS485 B(+)
10…28 VDC
Power
Ground
Chassis
Ground
10 - 28 VDC
Power Gnd.
Switch
or
Circuit
Breaker
Figure 6: DC power connections
Transmitter Installation
Page 14 May 2016TTM-UM-00136-EN-06