Section 13 - Servo Cooling
Option
WARNING
Ensure you have fully read “Section 3 - Safety” before doing maintenance
procedures or troubleshooting any issues with the E-Multi Servo Cooling
Option.
13.1
Operation and Specifications
The cooling unit’s pump powers up with the controller and continuously
circulates fluid through the motors.
The E-Multi controller automatically switches the flow rate of coolant between
high and low settings to maintain the motor temperatures in a safe range.
If there is insufficient cooling due to a failure of the system or external coolant
flow, the controller will automatically shutdown the motor drives when the
motor temperature reaches 85°C (185°F).
13.1.1
Closed Loop Specification
Pump high flow rate: 3.6 LPM (1 gal/min)
Pump low flow rate: 1.6 LPM (0.42 gal/min)
Pump pressure bypass: opens at 4.1 bar (60 psi)
Heat dissipation: 2.5 kW max
13.1.2
External Loop Specification
Max temp: 30°C (86°F)
Flow rate: 8-10 LPM (2.1 to 2.6 gal/min)
Pressure drop: 0.6 bar at 10 LPM (8.7 PSI at 2.6 gal/min)
Max pressure: 28 bar (406 PSI)
13.1.3 Materials in Contact with Coolant
Table 13-1 Materials in Contact with Coolant
Unit
Materials
Servo Motors
Al Mg 5 F32, Al Mg Si 0.5 F22
Seals
EPDM, Viton, Cork
Fittings
Brass, Polypropylene, Steel, Zinc
Reservoir
Polycarbonate
Lines
Polyurethane, Rubber
Heat exchanger
Copper, Tin
Pump
Stainless Steel, Graphite
13-1
SERVO COOLING OPTION
E-Multi User Manual
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