OCT output

Specifications

NPN, PNP Output

Power Supply	5-30V 200mA
Reverse Polarity Protection	Yes
Wiring	NPN, PNP
Current Consumption	200 mA @ 12V during stable operation at startup (excluding communication current)

Wiring

OCT NPN Output Wiring Diagram

• Brown: 24 VDC (+), Blue: 0 VDC (–), Orange: OCT Output (+), Yellow: OCT Output (−)

The OCT output circuit operates with a loop power of 5–30 VDC, 200 mA. This function requires the brown and blue lines of the main DC power supply to be powered. For clarity, the DC power lines are omitted from this diagram. Refer to the DC Power Wiring Diagram for details.

OCT PNP Output Wiring Diagram

Brown: 24 VDC (+), Blue: 0 VDC (−), Orange: OCT Output (+), Yellow: OCT Output (−)

The OCT output circuit operates with a loop power of 5–30 VDC, 200 mA. This function requires the brown and blue lines of the main DC power supply to be powered. For clarity, the DC power lines are omitted from this diagram. Refer to the DC Power Wiring Diagram for details.

OCT Parameter Configuration

Follow the steps below to configure OCT output parameters:

1

Set Basic Parameters

• Refer to the Parameter Settings page and complete the following steps: Language Setting, Pipe Settings — A02: Pipe Standard, A04: Pipe Outer Diameter, A06: Pipe Wall Thickness, A08: Pipe Material

• Execute Z03 (Automatic Initialization).

2

Wiring Setup

Connect the OCT output wiring according to the instructions on this page.

3

E01 NC/NO (Normally Closed or Normally Open)

Set parameter E01 NC/NO to select the default state when there is no signal:

• NC (Normally Closed): Conducting when idle

• NO (Normally Open): Open when idle

4

E02 OCT Definition (Output Signal Type)

Set parameter E02 OCT Info to specify the output signal type.

• If "Pulse Output" is selected:

  1. Use E03 Pulse Width to set the duration of each pulse.

  2. Use F03 to simulate the pulse output and verify that the receiving end correctly receives the pulse count.

• If "Pulse V2" is selected:

  1. Use E03 Pulse Width to set the duration of each pulse.

  2. Use E14 Pulse V2 Unit to define the volume represented by each pulse.

  3. Use F03 to simulate the pulse output and verify that the receiving end correctly receives the pulse count.

• If "Total Alarm" is selected:

  1. Use D09 Total Alarm to enable the alarm.

  2. Use D10 Total Trig. to set the trigger condition:

     • "Greater than Target" for forward flow

     • "Less than Target" for reverse flow

  3. Use D11 Total Target to specify the cumulative target:

     • Positive value for forward flow

     • Negative value for reverse flow

  (See Note 1)

• If "Flow Alarm" is selected:

  1. Use D05 FlowLIM Alarm to enable the flow range alarm.

  2. Use D06 UP LIM (Upper Limit) and D07 Low LIM (Lower Limit) to define the normal flow range.

     Note: If either D06 or D07 is adjusted, the other must also be set; otherwise the display may not function correctly. If both are unset, default values are D06 = 100, D07 = 0.

  3. Use D08 Hysteresis to define the hysteresis operation method. Values must be positive and expressed as a percentage; larger values reduce repeated alarm triggers.

  (See Note 2)

5

Return to the Main Screen. Complete.

Note 1

D09, D10, D11 Total Alarm Examples
Example 1: Forward Flow
Enable D09 Total Alarm.
Set D10 Total Trig. to "Greater than Target".
Set D11 Total Target to a positive value, e.g., +100.
When the cumulative forward flow exceeds 100, the system triggers the total alarm.
Example 2: Reverse Flow
Enable D09 Total Alarm.
Set D10 Total Trig. to "Less than Target".
Set D11 Total Target to a negative value, e.g., −500.
When the cumulative reverse flow drops below −500, the system triggers the total alarm

Note 2

Flow Range Limit Alarm Example
D06 Upper Limit: 30 LPM
D07 Lower Limit: 10 LPM
D08 Hysteresis: 3% (default)
Calculations:
Range: 30 − 10 = 20 LPM
Hysteresis: 20 × 3% = 0.6 LPM
Alarm Behavior:
When flow exceeds the upper limit (30 LPM), the alarm is triggered.
The alarm will clear only when the flow drops below 29.4 LPM (30 − 0.6).
When flow falls below the lower limit (10 LPM), the alarm is triggered.
The alarm will clear only when the flow rises above 10.6 LPM (10 + 0.6).