Power Wiring:
Connect terminals as shown below in Fig. 4.3. The
ETR-9040 is equipped to operate at either 11-26VAC/VDC
or 90-264VAC. Check that the installation voltage corre-
Input Wiring:
Connect appropriate sensors to terminals 3, 4, or 5 as
illustrated in Figure 4.3 above. Verify that the instru-
ment is selected for the correct sensor and the correct
polarity is observed at both the sensor-end and instru-
ment-end of the cable. Do not run sensor cables in the
same conduit or wiring trough as power lines because
the low level signal is noise sensitive.
When wiring the thermocouple, check the thermocouple
and extension wire (compensating cable) to make sure
they conform to the appropriate thermocouple type
specified by the instrument. Extension wires must be
the same alloy and polarity as the thermocouple. The
total lead resistance should not exceed 100 ohms for
accurate measurements. One hundred ohms of lead
resistance will introduce a 1°F (0.5°C ) error.
For wiring 3 wire RTD (Resistance Temperature
Detector) all leads connecting the RTD to the controller
must be the same gauge and material. If the RTD is a
3 wire device, install the two common wires of the RTD
to terminals 4 and 5. If a 2 wire RTD is to be used,
install a jumper between terminals 4 and 5.
Figure 4.3 Rear Terminal Connections
5
1
2
3
4
5
6
7
8
9
10
F
S
+
–
O/P1
Voltage
C
NO
NC
RTD
T/C
Sensor
Input
+
+
–
–
V
mA
V
Supply
Volttage
+
–
NO
C
Event
Input
Output
2
+
–
sponds with the power rating indicated on the product
label before connecting power to the unit. All wiring
must conform to national and local electric codes.
Thermocouple
Cable
American
British
German
French
Type
Material
ANSI
BS
DIN
NFE
1843
43710
18001
J
Iron/Constantan
+ white
- red
* black
+ yellow
- blue
* black
+ red
- blue
* blue
+ yellow
- black
* black
K
Chromel/Alumel
+ yellow
- red
* yellow
+ brown
- black
* red
+ red
- green
* green
+ yellow
- purple
* yellow
T
Copper
Constantan
+ white
- blue
* blue
+ blue
- red
* blue
+ red
- brown
* brown
+ yellow
- blue
* blue
R
S
Platinum/Rhodium
+ white
- blue
* green
+ black
- red
* green
+ red
- white
* white
+ yellow
- green
* green
B
Platinum/Rhodium
+ grey
- red
* grey
+ red
- grey
* grey
Table 4.1 Thermocouple Cable Color Codes
* Color of overall sheath
Chromel® and Alumel® are registered trademarks of Hoskins Mfg. Co.
