Product Core Brief

• Model: 1C31132G01
• Brand: EMERSON (Ovation / Westinghouse)
• Series: Ovation DCS
• Core Function: 4-channel Analog Output Personality Module (PMOD) that routes and conditions signals from the electronic module to field terminal blocks.
• Product Type: AO Personality Module (PMOD)
• Key Specs: 4-Channel | 4-20mA / 0-10V Configurable | ±0.1% FS Accuracy
• Condition: New Original / New Surplus

Key Technical Specifications

• Channels: 4 independent analog output channels
• Output Signal Range: 4-20mA (current) or 0-10V (voltage), configurable per channel
• Accuracy: ±0.1% of Full Scale (FS)
• Channel-to-Channel Isolation: 2.5kV AC
• Output-to-Logic Isolation: 1.5kV AC
• Ripple Noise: ≤50mV peak-to-peak
• Single Channel Load Impedance: ≤500Ω (current output) / ≥10kΩ (voltage output)
• Diagnostic Features: LED status indicators per channel, over-current protection (auto-recovery)
• Operating Temperature: -20°C to +60°C
• Storage Temperature: -55°C to +125°C
• Dimensions (W x H x D): 121mm × 51mm × 166mm (DIN rail mount)
• Weight: 0.35 kg
• Compliance: CE, UL, IEC 61000-6-2

Product Introduction

The 1C31132G01 is an Analog Output Personality Module (PMOD) for the Emerson Ovation DCS. It does not operate independently—it pairs directly with the 1C31129G03 Analog Output Electronic Module to form a complete AO output unit. The PMOD handles signal routing, channel definition, and field-side isolation, while the electronic module provides the D/A conversion and drive capability.

Engineered for harsh industrial environments, this module delivers 2.5kV AC channel-to-channel isolation and 1.5kV AC output-to-logic isolation, effectively blocking ground loops and EMI from corrupting your control signals. Each of the four channels supports independently configurable 4-20mA or 0-10V output, giving integrators the flexibility to mix signal types on a single card without hardware swaps.

QA & Testing SOP

Every PMOD we stock goes through a hands-on verification process before it leaves our bench:

1. Visual & Pin Inspection: We inspect the backplane connector pins for bends, corrosion, or burnt traces. The PMOD-to-EMOD mating interface is checked for any signs of arcing or loose contacts.
2. Isolation Resistance Test: Using a megohmmeter, we verify the 2.5kV AC channel-to-channel isolation and 1.5kV AC output-to-logic isolation meet spec. This is the most common failure point on used PMODs and the first thing we check.
3. Signal Routing Verification: The module is mated with a known-good 1C31129G03 electronic module on an Ovation test rack. We inject a digital setpoint and confirm the analog signal routes correctly through all four PMOD channels to the terminal block with ≤50mV ripple noise.
4. LED & Protection Circuit Check: We verify each channel’s LED status indicator lights correctly and trigger the over-current auto-recovery protection by briefly shorting an output terminal.
5. Anti-Static Packaging: Passed units are sealed in static-shielded bags with desiccant, then double-boxed for transit.

Installation Pitfalls & Guide

PMODs look simple, but they’re the most mishandled component in an Ovation rack. Here’s what trips people up:

• ❗ Wrong EMOD Pairing: The 1C31132G01 is a PMOD—it will not function without its paired electronic module (1C31129G03). Do not attempt to install it alone. The EMOD handles the logic; the PMOD is just the field interface.
• ❗ Backplane Pin Damage: The PMOD-to-EMOD mating connector has fine-pitch pins. Never force the two modules together. If they don’t seat smoothly, pull apart and inspect for bent pins. A single bent pin kills the entire channel.
• ❗ Ground Loop Misconception: The PMOD provides isolation, but it does not eliminate the need for proper grounding at the field device. If your field instrument has a floating ground, you’ll still see noise. The isolation protects the rack, not the field wiring.
• ❗ DIP Switch Configuration: Output type (4-20mA vs. 0-10V) is set per channel via DIP switches on the PMOD. Verify switch positions match your Ovation engineer station configuration before powering up. Mismatched settings cause incorrect field output.

4-Step Replacement Guide:

1. Pre-Install: Verify the replacement PMOD’s DIP switch settings match the existing configuration. Confirm the paired 1C31129G03 electronic module is seated correctly in the rack.
2. Removal: Power down the I/O rack if hot-swap is not supported. Unplug the field wiring from the terminal block, then carefully separate the PMOD from the EMOD by pulling straight apart—do not twist.
3. Install: Align the new PMOD with the EMOD connector and press firmly until fully seated. Verify the locking tabs engage. Reconnect field wiring to the correct terminals.
4. Power-on Test: Power up the rack. Check that all four channel LEDs indicate normal status. Perform a 4mA and 20mA step test on each channel and verify the field device responds correctly.

Technical FAQ

Q: Can I use this module without the 1C31129G03 electronic module? A: No. The 1C31132G01 is a Personality Module (PMOD), not a standalone controller. It contains no D/A converter or logic circuitry. It must be physically mated with the 1C31129G03 Analog Output Electronic Module to function. The EMOD does the digital-to-analog conversion; the PMOD routes and isolates the signal to the field.

Q: Can I mix 4-20mA and 0-10V outputs on the same PMOD? A: Yes. Each of the four channels is independently configurable via DIP switches. You can have channels 1 and 2 set to 4-20mA while channels 3 and 4 are set to 0-10V. Just make sure the DIP switch positions match the channel configuration in your Ovation engineer station software.

Q: Is this module hot-swappable? A: The Ovation system supports hot-swapping for I/O modules, but the PMOD/EMOD pair should be handled as a unit. If you’re replacing just the PMOD, you must first separate it from the EMOD. We strongly recommend placing the control loop in Manual mode before any removal to prevent a signal bump to the field device.

Q: What’s the difference between the 1C31132G01 and the 1C31129G03? A: They are two halves of the same output unit. The 1C31129G03 is the Electronic Module (EMOD)—it plugs into the Ovation backplane, contains the 16-bit D/A converter, and handles communication with the controller. The 1C31132G01 is the Personality Module (PMOD)—it mates with the EMOD and provides the field terminal block, channel isolation, and output type configuration. You need both.

Q: What is the warranty on surplus units? A: We provide a 12-month warranty from the date of delivery on both new original and new surplus stock. This covers manufacturing defects and DOA failures. It does not cover damage from improper installation, such as bent backplane pins, incorrect DIP switch settings, or ESD damage from handling without proper grounding.