F 6705 | HIMA F6705 2-fold Digital-To-Analog Converter Module

Description:

The HIMA F 6705 is a 2-fold digital-to-analog converter module designed for safety-related applications. It provides outputs of 0/4 ... 20 mA, which are individually galvanically isolated. The module features safety isolation and an integrated safety shutdown, and can operate in either source or sink mode. It meets requirement class AK 1 ... 6 and is automatically fully tested during operation.

Technical Specifications:

• Outputs:
  • Current Output: 0/4 ... 20 mA
  • Resolution: 12 bits (4095 steps); 0 = 0 mA, 3840 = 20 mA
• Burden (RB):
  • Source Mode: ≤ 550 Ohm including line resistance to the burden
  • Sink Mode: ≤ (UQ - 10 V) / 21.2 mA (UQ = source voltage)
• Errors:
  • Basic Error: ≤ 0.2% (40 µA) at 25 °C
  • Operating Error: ≤ 0.4% at 0 ... +60 °C
• Line Length: Maximum 1000 m (consider burden)
• Electric Strength: 250 V against Analog-GND
• Basic Status with Plug-in: I ≤ 40 µA
• Source Voltage (UQ) for Sink Mode: 10 ... 30 V
• Space Requirement: 4 TE
• Operating Data:
  • 5 V DC: 85 mA
  • 24 V DC: 130 mA

Additional Features:

• Automatic Testing:
  • Linearity of the DA-converter
  • Cross-talk between the outputs
  • Safety shutdown
• Cable Specifications:
  • Cable Type: LiYCY
  • Dimensions: 8 x 0.5 mm², l = 120 mm, q = 2.5 mm²
  • Channel Connection Color Coding: Specific colors assigned for each channel.
  • Flat Pin Plug: 2.8 x 0.8 mm², 6.3 x 0.8 mm for the cable screen, to be connected to the earth bar under the slot.
• Redundant Current Connection:
  • Total current to the burden (RB) is the sum of individual currents.
  • Admissible burden resistance is halved in redundant mode.
  • Paralleled channels must operate in the same mode (source or sink).
  • Each output channel should generate half of the total current to balance load and minimize temperature error.
• Bipolar Current Connection:
  • Supports output of currents between -20 mA to +20 mA.
  • Total current is the sum of individual currents (IG1 = I11 - I21 or IG2 = I12 - I22).
  • Positive and negative parts of the current are generated by different modules for accuracy.

Operational Notes:

• Unused channels must be terminated with a jumper to prevent module error messages.
• Ensure proper programming in the user’s program to manage the operation mode and current generation accurately.