Lenze ECSCAxxx - Manual (Page 38)

Safety instructions
Safety instructions for the installation according to UL
2
l
38 EDBCSXA064 EN 3.2
2.4 Safety instructions for the installation according to UL
J
Warnings!
General markings:
ƒ Use 60/75 °C or 75 °C copper wire only.
ƒ Maximum ambient temperature 55 °C, with reduced output current.
Markings provided for the supply units:
ƒ Suitable for use on a circuit capable of delivering not more than 5000 rms
symmetrical amperes, 480 V max, when protected by K5 or H Fuses
(400/480 V devices).
ƒ Alternate − Circuit breakers (either inverse−time, instantaneous trip types or
combination motor controller type E) may be used in lieu of above fuses
when it is shown that the let−through energy (i
2 t) and peak let−through
current (I
p
) of the inverse−time current−limiting circuit breaker will be less
than that of the non−semiconductor type K5 fuses with which the drive has
been tested.
ƒ Alternate − An inverse−time circuit breaker may be used, sized upon the
input rating of the drive, multiplied by 300 %.
Markings provided for the inverter units:
ƒ The inverter units shall be used with supply units which are provided with
overvoltage devices or systems in accordance with UL840 2nd ed., Table 5.1.
ƒ The devices are provided with integral overload and integral thermal
protection for the motor.
ƒ The devices are not provided with overspeed protection.
Terminal tightening torque of lb−in (Nm)
Terminal lb−in Nm
X 21, X 22, X 23, X 24 10.6 ... 13.3 1.2 ... 1.5
X4, X6, X14 1.95 ... 2.2 0.22 ... 0.25
X 25 4.4 ... 7.1 0.5 ... 0.8
Wiring diagram AWG
Terminal AWG
X 21, X 22, X 23, X 24 12 ... 8
X4, X6, X14 28 ... 16
X 25 24 ... 12