Dynisco TX180, Installation And Operation Manual

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10
The following chart gives maximum series resistance:
Max. Series Resistance, Rs Supply Voltage, Vs
1300 ohms 42.0 Volts
520 ohms 24.0 Volts
417 ohms 21.6 Volts
250 ohms 18.0 Volts
0 ohms 12.0 Volts
2.3.2 I
NPUT
T
ERMINALS
See Figure 5 for sensor input connections. Be certain to include the proper jumpers for
thermocouple sensors and for two or three wire RTD inputs. Any sensor other than the four-wire
RTD requires at least one external jumper. A jumper is supplied with the unit and is attached to
terminals 3 & 4.
Fig. 5 Input Terminal Connections
2.3.2.1 M
ILLIVOLT AND
T
HERMOCOUPLE
I
NPUT
Apply signal to terminals 1 and 2. Terminal 1 is the negative and terminal 2 is the positive. Terminals
3 and 4 must be jumpered together for proper operation as well as to prevent any build-up of
electrostatic charge on these terminals which could affect the transmitter readings.
2.3.2.2 T
WO
-W
IRE
RTD I
NPUT
Apply signal to terminals 1 and 3. Jumpers must be installed on terminals 1 and 2 as well as on 3
and 4 for proper operation and to prevent any build-up of electrostatic charge on these terminals
which could affect the transmitter readings.