Chapter 11 Specifications  ASDA-A2 
Revision February, 2017        11-7 
11.2  Specifications of Servo Motors (ECMA Series) 
11.2.1    ECMA 220 V Series 
Low Inertia Series 
Max. instantaneous current 
(A) 
Rotor inertia (× 10
-4
kg.m
2
)   
Torque constant-KT (N-m/A) 
Voltage constant-KE 
(mV/(r/min)) 
Armature resistance (Ohm) 
Class A (UL), Class B (CE) 
Weight (kg) (without brake) 
Power rating (kW/s)   
(with brake) 
Rotor inertia   
(× 10
-4
kg.m
2
) (with brake) 
Mechanical constant (ms) 
(with brake) 
Brake holding torque [Nt-m 
(min)]
 *2