VMX2 Series
ANSI Rated Compact Soft Starter
The VMX2 Compact Soft Starter delivers maximum performance in a compact form factor. Field-proven across thousands of installations, it delivers reliable soft starting with all control and protection features built in.
| AC Supply Voltage | 208 – 690 Vac |
| HP Ratings | 3 to 1,500 HP |
| Amp Ratings | 9 to 1,250 Amps |
| Overload Rating | 500% for 60 sec. |
| Enclosure | Module only or NEMA 1 / 12 |
| Rating | ANSI |
Compact Form Factor
Industry-leading compact dimensions for MCCs, pump panels, and retrofit enclosures.
ANSI Rated
Full ANSI rated protection with 500% overload for 60 seconds.
Field Proven
Thousands of installations across all industries worldwide.
iERS Energy Savings
Intelligent Energy Recovery System as standard on all units.
VMX2 Compact Series
Technical Specifications
Power Components
6 SCRs in inverse parallel pairs for full phase angle soft start control
1600V PIV rating on all units
RC snubber for dv/dt protection of each SCR pair
Line Voltage Range
200 to 600 VAC, 3 phase +10% / -15% on all units, 50/60 Hz
Current Ratings
18 – 1250A depending on unit selection
Range of each unit is 50–100% of maximum
AC Supply Voltage
User supplied 120VAC +10% / -15% tolerance, 60 Hz
Optional 240VAC 50 Hz control available
Overload Capacity (% of motor FLA)
500% for 60 seconds
Bypass Contactor
Standard on all units
Shunt rated bypass / Line start rated bypass
Start / Stop Control
2-wire Run-Stop using dry contacts
3-wire Start/Stop with built-in seal in contact
N.C. Interlock input (dry contact) for remote devices
Ramp Control (4 built-in)
Voltage Ramp
Voltage Ramp with Current Limit
CLT© Closed Loop Torque Ramp (Current Ramp)
Current Step (current limit only)
Ramp times adjustable 1 – 120 seconds
Current Limit adjustable 200 – 600% of FLA
Start & Run Protection
Two programmable overload trip curves: Class 5 – 30
Manual or automatic reset, remote reset available
Equipment Ground Fault
Residual current method with adjustable trip delay
Phase Imbalance / Loss
5 – 30% current imbalance between any two phases with trip delay
Jog
Dry contact closure selects a non-ramping Jog function at an adjustable torque
Kick Start
10 – 100% starting torque for 0.1 – 2 seconds
Pump-Flex™ Deceleration
Begin Decel 0 – 100% of line voltage
Decel ramp 1 – 60 seconds
End Decel 0 – 1% of Begin setting
Restart Delay Timer
Programmable 1 – 999 seconds after loss of control power for staggered restarts
RS-485 Serial Communications
Up to 247 starters per link
Modbus RTU protocol built-in
Full programming and remote control over the serial link
Operator Interface
Tactile feedback keypad
Easy to read LED display
Run and fault status indicators
Electronic Shear Pin
100 – 300% of motor FLA with trip delay
Motor Duty Cycle Protection
Back-spin/coast-down, starts-per-hour or minimum time between starts lockouts
Restart delay after a power failure
Short Circuit
Trips at 10× unit current rating during run
Checks for shorted load prior to each start
Shorted SCR
Locks out on any single shorted SCR (defeatable) or shunt-trip on multi-SCR shorts / welded bypass
Metering
Monitors phase current, ground current and motor thermal capacity
Phase Rotation
A-B-C, A-C-B or disabled
VMX2 Series
Documentation
- VMX2 Brochure2.26 MB
- VMX2 User Manual – Firmware V1.343.41 MB
- VMX2 User Manual – Firmware V1.373.41 MB
- VMX2 User Manual – Firmware V2.002.89 MB
- VMX2 Quick Start Leaflet337 KB
- VMX2 Quick Start Guide – V1.342.26 MB
- VMX2 Quick Start Guide – V1.372.26 MB
- VMX2 Quick Start Guide – V2.122.26 MB
- VMX Brochure3.53 MB
- VMX Operation and Service Manual1.8 MB
- VMX Dimensions781 KB
- VMX User Manual3.5 MB
- VMX Quick Start Leaflet – English781 KB
- VMX Quick Start Leaflet – Spanish280 KB
- VMX Basic Installation and Quick Startup Manual1.5 MB
VMX2 Series
Software Tools
System Requirements
Windows 10 or higher
Intel Core i3 or equivalent
2 GB RAM minimum
100 MB disk space