Chapter 6 4-20 Ma Input And Solid State Outputs; Analog Inputs: Connections And Configuration; Connections; Table 6-1 Wiring Connections For Current-Output Sensor - Spectris Particle Measuring Systems IsoAir 310P Operation Manual

Chapter 6 4-20 mA Input and Solid State Outputs

When in internal digital control mode the 5 digital outputs will be slaved to the status
LED as follows:
Status
Green
Yellow
Red
When in external digital control mode the 5 digital outputs can be run via:
PMS Interface
OPC Interface
Modbus Interface
Setup Interface

Analog Inputs: Connections and Configuration

Connections

On the IsoAir 310P with optional Analog Input/Digital Outputs, there are three Analog
Inputs that provide +24 VDC nominal power and 50 mA maximum current. The Analog
Inputs can accommodate sensors that output either electrical current (e.g. 4 – 20 mA)
or voltage (e.g. 0 – 10 volts).
The table below describes the connections for a standard Vaisala Temperature/
Relative Humidity (TRH) probe, operating with 4 -20 mA current outputs. Other probes
may have different color coding, but the connections are the same.

Table 6-1 Wiring connections for current-output sensor

+24 VDC Signal 1
IN
Yellow White
Temperature

Table 6-2 Wiring connections for voltage-output sensor

+24 VDC Signal 1
IN
Yellow
Temperature
Page 6-2
Digital Outputs
1 ON all others OFF
2 ON all others OFF
3,4,5 ON all others OFF
NOTE: Although the interface supports the external control of the digital
TCP
outputs, Pharmaceutical Net and Facility Net do not, and the digital
outputs will mimic the LEDs.
(TCP via writable tags)
(TCP via coils or single register)
(serial or Telnet TCP)
Ground +24 VDC
Brown
Relative Humidity
Ground +24 VDC
White Brown
Relative Humidity
Analog Inputs: Connections and Configuration
Signal 2 Ground +24 VDC
IN
Green
Signal 2 Ground +24 VDC
IN
Green
IsoAir 310P Aerosol Particle Sensor Operations Manual
Signal 3 Ground
IN
DAP, AFV or other analog
Signal 3 Ground
IN
DAP, AFV or other analog