621-9938R
PublishedSerial I/O Module
HoneywellControl Systems (PLC & DCS)I/O ModuleIndustrial supply
Honeywell 621-9938R redundant serial I/O module (SIOM) for Honeywell TDC 3000 systems. Manages the serial I/O card file and interfaces with the 621-9939 serial link module; dual redundant serial I/O lines; 8/16/32-point configurations.
Wholesale supply621-9938R
No public pricingPriced per agreement on volume and market. Send your quantities — Kaysan replies with availability and wholesale terms.
Product identity6 fields
Item nameSerial I/O Module
Item number / code621-9938R
BrandHoneywell
Product lineIndustrial supply
CategoryControl Systems (PLC & DCS)
Product typeI/O Module
Technical data11 rows
Model number621-9938R
TypeSerial I/O Module
621-9938RSerial Input/Output Module (SIOM) is a redundant communication unit designed for Honeywell TDC 3000 systems. It manages the serial I/O card file and interfaces
Dimensions33 × 23 × 13 cm
DurabilityDesigned for long-term use in mission-critical automation environments
Flexible ConfigurationAvailable in 8, 16, or 32 point setups
Industrial ComplianceCertified under CE, TUV, UL508, and CSA standards
InstallationRequires terminating resistors (200/300 ohm) at extreme ends of serial
OriginUSA
Points Supported8 / 16 / 32 point configurations
Redundant OperationSupports dual redundant serial I/O lines for high reliability
Reference numbers1 public
Honeywell621-9938R