Analog Output 4-20mA

Specifications

Wiring	3-wire
Power Supply	Shared with the main unit; no separate power source required
Maximum Output Range	2.4 ~ 21.6 mA
Response Time	<0.5 to 1 s (matches the display update rate)
Loop Resistance	600 Ω @ 24V

4–20 mA Analog Output Wiring Diagram

• Brown: 24 VDC (+), Blue: 0 VDC (–), Purple: 4–20 mA Output (+)

This function operates only when the brown and blue lines are powered by a DC supply.

Analog Output 4-20mA Parameter Configuration

Follow the steps below to configure NPN 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 4–20 mA analog output wiring according to the instructions on this page.

3

E06 Analog Output Content (Select Output Data Type)

Set parameter E06 Iout Def. to enable the analog current output and select the data to be output. Available options: “Cumulative Total”, “Flow Rate”, or “Flow”.

4

E13 – Analog Output Range (Set Current Range)

Use parameter E13 Iout Range to set the current output range to 4–20 mA.

5

E07 – 4 mA Value / E08 – 20 mA Value (Set Output Minimum and Maximum)

Set parameters E07 4mA Value and E08 20mA Value to define the output minimum and maximum. Negative values are allowed. Note: E07 must be less than E08.

• Example: To map 4–20 mA to a range of −10 to +20:

  • Set E07 (4 mA Value) to −10

  • Set E08 (20 mA Value) to +20

Intermediate values are calculated linearly: 12 mA ≈ +5, 16 mA ≈ +15

6

E09 Analog Error Value (Set Output for Out-of-Range Flow)

Use parameter E09 Iout Error to specify the current output when the flow value exceeds the range defined by E07 and E08.

• Example: E09 mode: 2.4 mA & 21.6 mA, E07: −10, E08: +20

  • Flow < E07 (−10) → output 2.4 mA

  • Flow > E08 (+20) → output 21.6 mA

7

E11 4 mA Fine Adjustment (µA) (Adjust 4 mA Output)

Enter E11 4mA Fine Adj. µA to test and adjust the 4 mA output. Each increment or decrement of 1 changes the output current by 1 µA.

• If an external ammeter measures 3.95 mA, which is 0.05 mA (50 µA) below the target of 4.00 mA,

• Set E11 to +50. The output will then be corrected to 4.00 mA.

8

E12 20 mA Fine Adjustment (µA) (Adjust 20 mA Output)

Enter E12 20mA Fine Adj. µA to test and adjust the 20 mA output. Each increment or decrement of 1 changes the output current by 1 µA.

• If an external ammeter measures 19.95 mA, which is 0.05 mA (50 µA) below the target of 20.00 mA, set E12 to +50. The output will then be corrected to 20.00 mA.

• If the 20 mA output cannot reach the target after adjusting E12, this may be due to excessive loop impedance or insufficient voltage. Check the 4–20 mA specifications on the Motor Installation page and adjust the loop impedance or increase the voltage as necessary.

After completing the 4–20 mA settings, verify the configuration using Simulation Mode to ensure correctness.