14
IOM (Safety) -
Installation, Operation and Maintenance
Optical Oxygen Analyzer
Input /Output wiring requirements:
•
26 to 16 gauge (IEC .400 to 1.25)
•
Copper, stranded wire
•
Minimum 300V Insulation
•
Tightened (torque) to .22 to .25 Nm
Input / Output Wiring
Input/Output wiring for the
OXYvisor
is located on the left side of the board as shown in Figure (8) & (9). For wiring assignments see Table (7).
USEFUL INFORMATION
Please note that the 24VDC version of the analyzer is a 4-wire device. It has separate wiring for power and
signal (not a loop powered device).
3.6.3 DC Powered Analyzer
DC Power
OXYvisor
analyzers ordered with DC power input will have a termination board labeled with “24VDC (+)”, “24VDC (-)”, and “Earth” (Ground) as
shown in Figure (9).
Analyzer - Power Supply Connections (DC Version)
The
OXYvisor
control unit can operate using 24 VDC +/-10%. When energized by mains the 24 V DC supply must be from a Class2 or LPS source,
OR that a fuse (1 A) will be required in the installation.
3.7 Wiring - Input/Outputs
AC OPTION
Terminal
Terminal
DC OPTION
Terminal
Terminal
Figure 8 - AC Terminal Board - Located in Rear (Wiring) Compartment
Figure 9- DC Terminal Board - Located in Rear (Wiring) Compartment
Section 3
Installation
!
CAUTION
Label
Terminal
Description
Function
Line
Power 120/240VAC
85-240 VAC 47/63Hz Input Power
Line Power Wiring
Neutral
Power 120/240VAC
85-240 VAC 47/63Hz Input Power
Neutral Power Wiring
Earth
Power 120/240VAC
Earth Terminal
Earth Terminal
Label
Terminal
Description
Function
24VDC (+) Power 24VDC
21.6 - 26.4 VDC
Positive DC Power Wiring
24VDC (-)
Power 24VDC
21.6 - 26.4 VDC
Negative DC Power Wiring
Earth
Power 24VDC
Earth Terminal
Earth Terminal
AC TERMINAL BOARD POWER WIRING
DC TERMINAL BOARD POWER WIRING
Table 5 - AC Terminal Board Power Wiring
Table 6 - DC Terminal Board Power Wiring
Input / Output
TERMINAL
-
B
Label
Description
Function
RS485 GND
Serial Communication
Modbus RS485 RTU Common Wire
RS485 -
Serial Communication
Modbus RS485 RTU Data Negative Wire
RS485 +
Serial Communication
Modbus RS485 RTU Data Positive Wire
PT100 V -
PT1000 4-wire or jumper to next terminal
PT100 4 wire RTD input, Drive Voltage negative wire (black)
PT100/PT1000 -
PT1000 Temperature Sensor
PT1000 negative wire then jumper to PT100 - terminal above
PT100/
PT1000 Temperature Sensor
PT1000 positive wire then jumper to PT100 + terminal below
PT100 V+
PT1000 4-wire, 3’rd wire or jumper to above terminal
PT100 4 wire RTD input, Drive Voltage positive wire (red)
DI2 -
Digital Input 2 (0 VDC)
Powered Digital input, Negative Wire, Connect to external switch for remote Test Gas Insert
DI2 +
Digital Input 2 (5 VDC)
Powered Digital input, Positive Wire, Connect to external switch for remote Test Gas Insert
DI1 -
Digital Input 1 (0 VDC)
Powered Digital input, Negative Wire, Connect to external switch for remote AutoCal Initiation
DI1 +
Digital Input 1 (5 VDC)
Powered Digital input, Positive Wire, Connect to external switch for remote AutoCal Initiation
AI1 -
Analog Input (0 VDC, 4-20mA)
Analog Input, Negative Wire, 24VDC Powered,. Programmable for Temperature or Pressure
AI1 +
Analog Input (24 VDC, 4-20mA)
Analog Input, Positive Wire, 24VDC Powered,. Programmable for Temperature or Pressure
Input / Output
TERMINAL
-
A
Label
Description
Function
-NC-
Not used
Not used
DO4 -
Relay Output 4 (24VDC, 0.05A pilot duty, 0.4A resistive load)
Programmable, Isolated Relay Negative wire
DO4 +
Relay Output 4 (24VDC, 0.05A pilot duty, 0.4A resistive load)
Programmable, Isolated Relay Positive wire
DO3 -
Relay Output 3 (24VDC, 0.05A pilot duty, 0.4A resistive load)
Programmable, Isolated Relay Negative wire, (Process Gas Relay if AutoCal is used)
DO3 +
Relay Output 3 (24VDC, 0.05A pilot duty, 0.4A resistive load)
Programmable, Isolated Relay Positive wire, (Process Gas Relay if AutoCal is used)
DO2 -
Relay Output 2 (24VDC, 0.05A pilot duty, 0.4A resistive load)
Programmable, Isolated Relay Negative wire, (Span Cal Relay if AutoCal is used)
DO2 +
Relay Output 2 (24VDC, 0.05A pilot duty, 0.4A resistive load)
Programmable, Isolated Relay Positive wire, (Span Cal Relay if AutoCal is used)
DO1 -
Relay Output 1 (24VDC, 0.05A pilot duty, 0.4A resistive load)
Programmable, Isolated Relay Negative wire, (Zero Cal Relay if AutoCal is used)
DO1 +
Relay Output 1 (24VDC, 0.05A pilot duty, 0.4A resistive load)
Programmable, Isolated Relay Positive wire, (Zero Cal Relay if AutoCal is used)
AO2 -
Analog Output 2 (4-20mA) Active
Analog Output (Negative wire, Active 24 VDC)
AO2 +
Analog Output 2 (4-20mA) Active
Analog Output (Positive wire, Active 24 VDC)
AO1 -
Analog Output 1 (4-20mA) Active
Analog Output (Negative wire, Active 24 VDC)
AO1 +
Analog Output 1 (4-20mA) Active
Analog Output (Positive wire, Active 24 VDC)
INPUT / OUTPUT WIRING
Table 7 - Terminal Board - Input / Output - Wiring
