Watlow Series V4 Instrukcja Użytkownika Strona 8
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Input Wiring
Figure 8a – Thermocouple
Extension wire for thermocouples must be of the same alloy as the thermo-
couple itself to limit errors.
Figure 8b – RTD (2- or 3-Wire) 100Ω Platinum
There could be a +2°F input error for every 1Ω of lead length resistance
when using a 2-wire RTD. That resistance, when added to the RTD ele-
ment resistance, will result in erroneous input to the instrument. To over-
come this problem, use a 3-wire RTD sensor, which compensates for lead
length resistance. When extension wire is used for a 3-wire RTD, all wires
must have the same electrical resistance (i.e. same gauge, same length,
multiple-stranded or solid, same metal.
Figure 8c – Process,4-20mA Figure 8d – Process,0-5VÎ (dc)
Input impedance: 5Ω Input impedance: 10kΩ
DIP Switch
Orientation
DIP Switch
Orientation
1: ON
2: ON
PROC
-
+
V
dc
4
5
6
5
6
OFF
1 2
OFF
1 2
- 4
+ 6
I
dc
PROC
DIP Switch
Orientation
1: ON
2: ON
DIP Switch
Orientation
OFF
1 2
4
5
6
OFF
1 2
2-wire RTD
Jumper Terminals 5 & 6
S1
S2
S3
4
5
6
DIP Switch
Orientation
DIP Switch
Orientation
1: OFF
2: OFF
RTD
OFF
1 2
4
5
6
OFF
1 2
OFF
1 2
3-wire
RTD
S1
S2
S3
4
5
6
DIP Switch
Orientation
DIP Switch
Orientation
1: OFF
2: OFF
RTD
4
5
6
OFF
1 2
DIP Switch
Orientation
TC
T/C
+
-
5
6
DIP Switch
Orientation
1: OFF
2: ON
OFF
1 2
4
5
6
OFF
1 2
NOTE:
Successful installa-
tion requires five
steps:
• Choose the con-
troller’s hardware
configuration and
model number;
• Choose a sensor;
• Install the con-
troller;
• Wire the controller
and
• Configure the con-
troller.
ç
WARNING:
To avoid damage to
property and equip-
ment and/or injury or
loss of life, use
National Electric
Code (NEC) standard
wiring practices to
install and operate
this unit. Failure to
do so could result in
injury and/or death,
or such damage.
NOTE: When an
external device with a
non-isolated circuit
common is connect-
ed to the 4-20mA or
dc output, you must
use an isolated or
ungrounded thermo-
couple.
ç
CAUTION: Process
input does not have
sensor break protec-
tion. Outputs can
remain full on.
- Users Manual 1
- Series V4 1
- Overview 2
- Keys and Displays 3
- Installation and Removal 4
- Wiring the Series V4 6
- Wiring Example 7
- Input Wiring 8
- Output 1 Wiring 10
- Output 2 Wiring 11
- Calibration 13
- Entering the Calibration Menu 13
- Restoring Factory Calibration 13
- Calibration Menu 14
- Statement: 17
- Quality and 17
- Declaration of Conformity 18
- Specifications (1465) 19
- Ordering Information 20
- Series V4 Software Map 21
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