Guidelines For Replacing The Old Geared Motor; Wiring - Mitsubishi Electric Super Helicross Series Instruction Manual

4.3 Installation of torque arm
The torque arm is normally used for fixing of the hollow shft type geared motor. This is because the torque arm can prevent unexpected
rotation of the geared motor that may be caused by the reaction force of the driven machime,
Considering the shock that may be applied at starting or braking, be sure to select a plate thickness and bolt type that can ensure enough
①
strength (refer to Fig. 5).
② Move the end face of the hollow shaft close to section A (torque arm whirl-stop) as far as possible.
Check that forces unnecessary for stopping the whirl cannot be applied to the torque arm whirl-stop..
③
Elongate dimension "r" of the torque arm ad long as possible (refer to Fig. 6).
④
Driven shaft
Section A

5. Guidelines for replacing the old geared motor

When replacement of the old geared motor, please note the following.
(1) There is mounting compatible, but the total length will be longer. When installation, please check the interference of surrounding devices.
Also, consider ventilation for the motor cooling, please keep a distance between the fan cover and the wall, as in Figure 5 and Table 1.
Dimensions FC2 is minimum dimensions of the wall-to-fan cover in consideration of ventilation for motor cooling, however, we recommend
to set the wall-to-fan distance so that when conducting brake maintenance or etc, the fan cover can be removed.
(2) Please reconsiders the design of the wiring equipment of the breakers and etc since starting current may increase.
(3) Since the rotation speed may increase and the power consumption increase, please consider the necessity of countermeasures such as setting the
rotational speed of the load machine to the same as previous one by changing the sprocket ratio or the output frequency of the inverter.
(4) Please reconsider the acceptable number of starts and the acceptable number of starts per hour, since moment of inertia may increase.
(5) When using non-brake geared motors, period of free-run may be longer. Also, when it comes to brake-in geared motors, especially when
simultaneous braking method, brake holding period may be longer. Therefore according to necessity, please adopt separated braking method or
Direct current (quick) braking method.
Fig.7 Dimension of the wall-to fan cover

6.Wiring

(1) Be sure to ground the geared motor, and install a circuit breaker on each motor. Without grounding or circuit breaker, you may get an
electric shock.
(2) To wire the geared motor, use high-quality wiring parts, and be sure to observe the technical standards for electric equipment and the
regulations for internal wiring specified by the corresponding electric power company. The outline is shown in Table 1. If the wiring
distance is long, adjust the voltage drop to 2% or less.
(3) Install an optimum motor protector on each motor. Without any protector, the motor may cause a fire at the time of a problem.
(4) Be sure to supply the specified voltage to the geared motor. If the voltage is too high, a fire may be caused.
(5) To remove the terminal cover, lift the cover while pulling the cover in the arrow direction shown on the cover.(0.1 to 0.4kW)
Minimum wire
thickness(mm)
Motor Output
type (kW)
200V
SSY, SSY2 0.1,0.2
SHY, SHY2 0.4
0.75
SSYP,
1.5
SHYP
2.2
Note1: The "minimum wire thickness" is for when three wires are place in a conduit.
Note2: Maximum wire line length is a measure that voltage drop is 2% or less.
Note3: Overcurrent breaker is for power distribution. Motor breakre for motor protection, please select the ones that conform to the motor rated
output.
Torque arm
Spacer
Flat washer
Detailed drawing of section A
Fig. 5
Maximum wire
line length(m)
(See Note 1) (See Note 2)
400V 200V
1.6 1.6 144
1.6 1.6 81
1.6 1.6 54
1.6 1.6 32
1.6 1.6 23
Torque arm
Special bolt
Output (kW)
0.75
1.5
2.2
3.7
5.5
7.5
Overcurrent
breaker(A) (Note3)
Full-voltage
starting
400V 200V 400V
580 15 15
326 15 15
217 15 15
130 30 15
94 30 15
－ 5 －
- 5 -
Fig. 6
FC1(mm) FC2(mm)
64(127) 20
73(145)
83(150)
40
95(170)
117(197)
Over scale Minimum
ammeter(A) grounding wire
thickness(mm)
200V 400V 200V
5 5 1.6
5 5 1.6
5 5 1.6
10 5 1.6
10 5 1.6
400V
1.6
1.6
1.6
1.6
1.6