Honeywell 620-K0025 620 Series Analog Output Module

The Honeywell 620-K0025 , also cataloged as the 620-K0025 Analog Output Module, serves as the primary 620 Series Analog Output Module utilized to execute digital-to-analog signal conversion for field control devices across Honeywell IPC 620 platforms.

Hardware Specifications

4-20 mA HART Loop Protocol & Channel Isolation

The module provides conversion of controller commands using eight independent 14-bit DACs with a fast settling time of 3 ms for full-scale step changes. Each channel can be configured independently for voltage or current mode, accommodating load impedances of minimum 2 k Ohm for voltage outputs and maximum 600 Ohm for current loops. Two internal 100 uF tantalum capacitors deliver a 10 ms power hold-up time to sustain output values during brief 24 VDC voltage sags, maintaining output stability within ±0.1% full scale accuracy across the operating temperature range.

Frequently Asked Questions

Q: How is wire termination managed on the 20-pin terminal block for mixed voltage and current outputs?

A: The 20-pin terminal block accepts wire sizes from 0.2 mm2 to 2.5 mm2. Twisted-pair cables with one wire grounded should be used for voltage signals, while standard two-wire cables are recommended for current loop wiring.

Q: What protection mechanisms are integrated into the module power and output circuitry?

A: The 24 VDC power input features built-in reverse polarity protection, and each individual analog output channel includes short-circuit protection to prevent hardware damage from field wiring faults.

Field Installation Guidelines

1. Mount the module securely on a standard DIN rail or fasten directly to a cabinet panel using M4 mounting screws.
2. Ensure the 24 VDC power source is switched off before terminating wiring at the 20-pin terminal block.
3. Keep analog output wiring separated from high-voltage AC conductors to reduce electromagnetic interference, using shielded twisted-pair cables for voltage channel runs.
4. Verify cabinet ambient conditions do not exceed the operating range of -20 deg C to 60 deg C and relative humidity remains below 95% non-condensing.