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Helmholz AI 2/4 x R, RTD, 16-Bit, 2/3/4-wire – Automate Control Engineering Ltd. Wong Tai Sin

  Other electonics   (Item ID: 3719)

Helmholz AI 2/4 x R, RTD, 16-Bit, 2/3/4-wire – Automate Control Engineering Ltd. ([email protected])


General characteristics

- 2/4 inputs for measuring resistance (electrically isolated from the backplane bus)

- 4 process input words

- Measuring ranges: 150 ohms, 300 ohms, 600 ohms, 3000 ohms, 6000 ohms, PT100, PT1000, Ni100, Ni1000, LG-Ni1000, individually configurable for each channel

- Can accommodate 2/3/4-wire sensors

- Measurement resolution of 15 bits + sign

- Diagnostic messages

- Wire break detection

- Limit value alarms for each channel

- A bi-color LED (blue/red) indicates the module’s operating status and any malfunctions


Module parameters

- Diagnostic alarm: ON | OFF

- Overflow/underflow diagnosis: ON | OFF

- Representation values: SIMATIC* S7 | SIMATIC* S5

- Temperature unit:

Celsius x 10 | Fahrenheit x 10 | Kelvin x 10

Parameters for each channel

- Wire break detection: ON | OFF

- Interference frequency suppression: None | 10 Hz | 50 Hz | 60 Hz | 400 Hz

- Measuring range: 150 ohms | 300 ohms | 600 ohms | 3,000 ohms | 6,000 ohms | PT100 | PT1000 | Ni100 | Ni1000 | LG-Ni1000

- Sensor type: Disabled | 2-wire | 3-wire (channels 0 & 2 only) | 4-wire (channels 0 & 2 only)

- Limit value alarms enabled: ON | OFF

- Upper/lower limit: 16-bit analog value (±27648)


Technical data/Ordering data

Analog Input Module - AI 2/4 x R, RTD, 16-Bit, 2/3/4-wire

S/N: 600-253-4AD01

Number of inputs: 2/4

Electrically isolated from backplane bus: Yes

Channels electrically isolated from each other: No

Current draw

- External: Not required

- Internal: Max. 140 mA

Verlustleistung: Max. 1.0 W

Measuring ranges:     150 ohms

300 ohms

600 ohms

3,000 ohms

6,000 ohms






Measuring method: Integration

Measurement resolution: 15 bits + sign

Interf. frequency suppression: None | 10 Hz | 50 Hz | 60 Hz | 400 Hz

Diagnoses:         Upper measuring range limit exceeded (overflow)

Lower measuring range limit fallen below (underflow)

Wire break

Parameter assignment error

Process alarms: Upper and lower limit per channel

Error limits

- Operational error limit: ±0.5 % within the entire temperature range, relative to the nominal range

- Basic error limit: ±0.3 %, operational error limit at 25 °C, relative to the nominal range

- Temperature error: ±0.005 %/K relative to the nominal range

- Linearity error: ±0.05 %/K relative to the nominal range

- Repeating accuracy in steady state at 25 °C: ±0.05 %/K relative to the nominal range

Parameter configuration length: 26 bytes

Group error indicator: Red LED

Hot-pluggable: Yes

Dimensions (H x W x D): 110 mm x 14 mm x 73 mm

Weight: Approx. 70 g

 Published date:

09/09/2015 10:22 am

 Expiration date:



Kowloon Peninsula


Wong Tai Sin


Unit 2,15/F.,New Tech Plaza,34 Tai Yau Street,San Po Kong,Kowloon,Hong Kong

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