- 75 to 200kW Drives : 15 Minute 100% Outage -

The M3460B4 series of DC Bus Ride-Thru Modules, in conjunction with a battery bank, provide protection from power outages for 230-575VAC fixed bus variable frequency drives (VFDs). Industries with critical systems or continuous processes can suffer huge losses from equipment downtime, loss of production, or damaged product when VFDs trip on under voltage conditions. While many drives claim to have Ride-Thru capability such as auto restart or kinetic buffering, none are able to maintain control over the motor as called upon by the process during deep sags or a complete loss of power.

A cost effective method of storing energy for power outages between a few seconds and several minutes are battery banks. Since a battery bank cannot be placed directly on a drives DC bus due to its wide 30% regulation range, model 3460B4 Bonitron boost regulator module is used to interface the changing battery voltage to the drive bus voltage level. This allows the drive to “ride through” these events while, MAINTAINING MOTOR SPEED and TORQUE, without experiencing drive shutdown.

A complete Bonitron Power Source system includes batteries, isolated charger, and a voltage boost regulator. Standard systems are designed to provide 15 minutes of power to the drive DC bus allowing sufficient time for controlled system shutdown or generator start up and transfer to auxiliary power. Longer Ride Thru times are available upon request. Short Ride Thru times should consider Ultra Capacitor storage technology. This parallel method of Ride Thru does not decrease the existing drive systems reliability. Adding the optional M3528BB battery bypass system can increase Ride Thru reliability by allowing the system to provide full power even when a battery opens.

The 3460B4 is designed for regulating battery banks during 15 minute outages, with drive systems ranging from 75 to 200kW.