Omega PLATINUM Series, Руководство пользователя, Страница: 6 / 16

6 Hardware Setup
3.2 10-PIN Connector Wiring Diagrams
The 10-pin universal input connector pin assignments are summarized in Table 4 .
Table 4. 10-Pin Input Connector Wiring
Pin
No.
Code Description
1 ARTN Analog return signal (analog ground) for sensors and remote Setpoint
2 AIN+ Analog positive input
3 AIN- Analog negative input
4 APWR Analog power reference
5 AUX Auxiliary analog input for remote Setpoint
6 EXCT Excitation voltage output referenced to ISO GND
7 DIN Digital input signal (latch reset, etc.), Positive at > 2.5V, ref. to ISO GND
8
ISO
GND
Isolated ground for serial communications, excitation, and digital input
9 RX/A Serial communications receive
10 TX/B Serial communications transmit
Table 5
summarizes the universal input pin assignments for different sensor inputs. All sensor selections
are firmware-controlled and no jumper settings are required when switching from one type of sensor to
another.
Table 5 . Sensor Pin Assignments
Pin
Diff
Voltage
Process
Voltage Process
Current 2-Wire
RTD
3-Wire
RTD
4-Wire
RTD
Thermistor
Remote
(1)
Setpoint
1 Vref -
(2)
Rtn
(3)
RTD2- RTD2+ Rtn
2 Vin + Vin +/- I+ RTD1+ RTD1+ RTD1+ TH+
3 Vin - I- RTD2- TH-
4 Vref +
(2)
RTD1- RTD1- RTD1-
5 V/I In
(1)
Remote Setpoint cannot be used with RTD inputs.
(2)
Reference voltage required for Ratio-metric mode only.
(3)
2 Wire RTD Requires external connection of Pin 1 and Pin 4.
Figure 3 shows the wiring diagram for connecting RTD sensors. For 2 wire RTD sensors use a jumper
wire, included in the provided wire kit, to connect pins 1 and 4.
Figure 3. RTD Wiring Diagram
1 2 3 4 5 6 7 8 9
10