Description
1. At-A-Glance Executive Brief
- Model: MTAP2 (PCB-00322-REVD)
- Brand: PdMA Corporation
- Part Type: Motor Test Access Port (MTAP) Interface Board
- Lifecycle Status: Active Support / High Demand Plant Asset
- System Compatibility: PdMA M-Series EMAX and MCEMAX Portable Motor Testers
- Core Protocol: Safe external connection interface for energized AC motor diagnostics
2. Technical Introduction
Performing routine electrical maintenance on energized AC motors and generators typically forces technicians to open switchgear or motor control center (MCC) doors, introducing major arc flash risks. The PdMA MTAP2 (PCB-00322-REVD) solves this safety dilemma by providing a permanently mounted external access port wired directly to the motor leads inside the enclosure. By stepping down and isolating voltages at the external terminal to safely below 50V, this module allows maintenance teams to connect portable diagnostic test equipment without violating OSHA or NFPA 70E personal protective equipment mandates.
3. Core Technical Specifications
| Parameter | Value |
| Module Board Number | PCB-00322-REV D (Backward compatible with earlier Revisions) |
| Maximum Input Voltage | Up to 480 VAC nominal system voltage |
| Test Port Voltage | Restricted to < 50V for NFPA 70E compliance |
| Compatible Testers | PdMA M-Series, EMAX, and MCEMAX diagnostic instruments |
| Enclosure / Component Rating | UL and CSA recognized components; CSA listed to UL508 and CSA 22.2 #14 |
| Directives | CE Marked for industrial compliance |
| Mounting Type | Panel-mount interface board for MCC or switchgear housing |
| Operating Environment | Designed for harsh industrial electrical rooms and manufacturing floors |
4. Field Engineer’s Tech Notes
- CT and Voltage Ratio Verification: When wiring the MTAP2 internal leads to the motor feeder cables and current transformers, double-check that the scaling ratios match your diagnostic instrument settings in the EMAX/MCEMAX software. Incorrect ratio mapping will skew power quality and impedance measurements during testing.
- Enclosure Grounding Integrity: Ensure the mounting chassis and dedicated ground lug on the PCB assembly are tied directly to the MCC or switchgear earth ground bus with minimal lead length. A compromised ground path degrades high-frequency noise suppression and compromises safety isolation.
5. Adaptive QA & Testing Protocol
Every pre-owned or New Surplus (NSFP) MTAP2 module undergoes strict bench verification before leaving our facility to ensure complete circuit reliability.
- Testing Actions: Technicians mount the board to a simulation test rig, applying controlled high-voltage inputs up to rated limits while measuring step-down attenuation at the external test port. We verify signal continuity across all internal voltage and current transformer (CT) channels, test insulation resistance barriers, and validate pinout integrity on the data connector.
- Documentation: Full functional test reports and verification logs are available upon request prior to dispatch to confirm absolute operational readiness.
6. Buyer’s FAQ
- Can the MTAP2 be used with non-PdMA diagnostic equipment?The MTAP2 utilizes custom cabling designed specifically to interface safely with PdMA M-Series, EMAX, and MCEMAX portable motor analyzers. Using it with third-party hardware requires custom pinout adaptation.
- What warranty coverage comes with this module?All units are backed by a comprehensive 12-month operational warranty covering component integrity and signal transmission performance.
- How fast can an emergency replacement unit ship?In-stock items ship same-day from our US facility using expedited global freight carriers to prevent delays during scheduled plant outages.
- Is Revision D (REVD) backward compatible with older Revision C boards?Yes, Revision D incorporates manufacturing updates and component enhancements while maintaining drop-in mechanical and electrical compatibility with legacy PCB-00322 configurations.
