Foxboro DM400YR (FBM15) – 120VAC 8-In/8-Out I/O Expansion Module

Product Overview

Model: DM400YR (FBM15)

Type: 8-channel isolated AC input + 8-channel isolated AC output expansion module

System: Foxboro I/A Series DCS

Core Specifications

Input Voltage: 120VAC (nominal), 50/60Hz

Output Voltage: 120VAC (nominal), 50/60Hz

Channel Count: 8 input / 8 output (isolated)

Input Type: Dry contact / 120VAC voltage input

Output Type: Triac, 120VAC, 0.5A per channel

Isolation: 250VACrms (channel-to-channel, channel-to-ground)

Response Time: ≤10ms (input); ≤15ms (output)

Backplane Power: 24VDC ±10%

Power Consumption: ≤4.0W

Operating Temp: 0°C to +55°C (32°F to 131°F)

Storage Temp: -40°C to +85°C (-40°F to 185°F)

Humidity: 5%–95% RH, non-condensing

Dimensions (D×W×H): 18.0" × 6.25" × 1.5"

Weight: ~1.07 kg (2.35 lbs)

Hot Swap: Supported (online replacement)

Diagnostics: Open/short circuit detection, channel status LED, output overload protection

Installation & Wiring

Mounting: Single-slot, vertical installation in I/A Series 100-series chassis; allow ≥50mm top/bottom clearance for cooling.

Cable: Shielded twisted pair (18–22 AWG); max length 300m (input), 200m (output).

Shielding: Shield grounded at one end only (control room side).

Separation: Keep AC I/O cables ≥30cm from DC/power cables to reduce interference.

Terminals: Torque terminals to 0.8–1.0 N·m; avoid loose connections.

ESD: Use anti-static wristband during handling; do not touch gold contacts.

Output Load: Max 0.5A per channel; avoid inductive loads without snubber.

Operation & Maintenance

LED Indicators:

PWR: Green = Backplane power OK

RUN: Green blinking = Normal communication

FAULT: Red = Channel fault (open/short), output overload, or communication error

Redundancy: Supports dual-module redundant pairing; switchover <50ms.

Maintenance:

Inspect terminals annually; re-torque if needed.

Clean dust from module/chassis every 6–12 months.

End-of-life: Discontinued; replace with spare module (no field repair).

Compatibility

Direct Replacement: FBM15, DM400YR-0E

System Compatibility: I/A Series 100-series; works with CP10, CP30, CP60 controllers.

Upgrade Alternative: FBM239 (I/A 200-series, Ethernet-based 120VAC I/O module).

Spare Notes: Only refurbished/used units available; DM400YR is the combined I/O counterpart to DM400YJ (input) and DM400YP (input expansion).