MVI56-101M PROSOFT

Model: MVI56-101M
Brand: ProSoft Technology
Series: MVI56 (ControlLogix in‑chassis)
Core Function: IEC 60870-5-101 master for serial substations
Type: IEC 60870-5-101 Master Communication Module
Key Specs: ControlLogix slot, 800 mA @ 5.1 V, up to 32 serial devices (typical)

For detailed sizing and hazardous‑area acceptance, always confirm against the latest ProSoft datasheet and installation manual for MVI56‑101M.

Product Introduction

From a ControlLogix perspective, the ProSoft MVI56‑101M is the in‑rack way to talk IEC 60870‑5‑101 to legacy substations and protection devices without adding an external gateway. It occupies a single ControlLogix slot and acts as an IEC‑101 master, presenting data to the PLC via a defined internal database.

Engineers pick the MVI56‑101M when they need the ControlLogix CPU to poll multiple IEC‑101 outstations—often up to a few dozen serial devices on multi‑drop links—while keeping communication timing decoupled from the PLC scan. Backplane draw is 800 mA at 5.1 V plus about 3 mA at 24 V, with an operating range of 0 to 60 °C, so you must check both rack power and cabinet temperature before you sign off the design.

Key Selling Points & Differentiators

IEC 60870‑5‑101 master in a single ControlLogix slot, avoiding an extra DIN‑rail gateway and separate power supply in already crowded protection panels.
Typical applications interface up to around 32 IEC‑101 serial devices from one ControlLogix processor, which is enough for many substation and RTU consolidation projects.
Backplane current of 800 mA @ 5.1 V and 3 mA @ 24 V means you must keep ~20% headroom on the 5 V rail; ignoring this is a common cause of random communication issues in mixed ControlLogix racks. (Typical figure, verify exact load in datasheet.)
Compared with DNP3 or Modbus modules, IEC‑101 master is better aligned to European and utility environments that standardize on IEC 60870‑5‑101; trying to “shoehorn” those sites onto other protocols often introduces avoidable conversion layers.
Not recommended for greenfield designs where IEC‑104 over TCP is already mandated; in those cases, go straight to an IP‑based solution and keep MVI56‑101M for serial legacy catch‑up only. (Check project spec and IEC‑104 requirements.)
For stock spares, you can treat “New Original (New Surplus)” or “Refurbished (tested)” as viable options only if they come with a functional test report (power‑on, IEC‑101 exercise, 24+ hour run) and photos of the actual module.