Overview
Manuals
RTD Input Configuration
Carrier and Wiring
Diagnostic Commissioning
Features:
- Four independent RTD channels accept documented three-wire and four-wire sensor connections.
- Selectable platinum, copper, nickel and nickel-iron RTD types can be reported as resistance, degrees Celsius or degrees Fahrenheit.
- Fifteen-bit-plus-sign conversion, per-channel configuration and onboard diagnostics support precise VersaMax temperature monitoring.
IC200ALG620 is the VersaMax four-channel RTD analog input module listed by Emerson. Each channel can be configured independently for a supported RTD type, a 0–500 Ω or 0–3000 Ω resistance range, and the required engineering units.
The module draws its operating power from the VersaMax backplane and does not require a separate external field supply. Installation must preserve the documented carrier, terminal wiring, hardware revision and channel configuration.
Official source: Emerson IC200ALG620 product record and VersaMax modular I/O documentation.
GE IC200ALG620 VersaMax RTD Input Module Manuals / Datasheets / Resources
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Sensor wiring: Each of the four channels supports a documented three-wire or four-wire RTD connection.
Selectable elements: Platinum 25 Ω, 100 Ω and 1000 Ω; copper 10 Ω, 50 Ω and 100 Ω; nickel 100 Ω and 120 Ω; and nickel/iron 604 Ω.
Engineering format: Configure each channel for 0–500 Ω or 0–3000 Ω resistance, degrees Celsius or degrees Fahrenheit. Match the software setup to the connected element before enabling the channel.
Install IC200ALG620 on the documented VersaMax I/O carrier and verify the terminal assignment before reconnecting field wiring. The module is powered from the backplane and requires no separate external power supply.
Confirm the connected sensor type, three-wire or four-wire arrangement and channel range against the saved hardware configuration. For modules at firmware revision 1.11 or later, the published maximum lead resistance is 50 Ω per lead.
Before returning the RTD channels to service, compare the configured element type and engineering units with the field sensor schedule. Apply a known resistance or verified process temperature to each channel, confirm stable readings, and check that the PLC logic uses the correct channel data format.
The published channel update time is approximately 210 ms at 60 Hz or 230 ms at 50 Hz. Allow for this scan behavior when validating alarms, scaling and control responses.
