6766
8. Daily Inspection and Maintenance
■
ESB-250, ESB-250-2 (Outdoor Type)
30.5
1
3456
2
1
6
AC
200V
SW
MB
Instant
activation
5
3
4
2
74
84
AC 200 V/220 V
CONTACTORBRAKE
13.513.5
7
Terminal screw M4
13.5
66
5.5
41
51
Timerandgatecircuit
Arc-extinguishingcircuit
2120191817161514131211
9 8
24
23
7
22
6 5 4 3 2 110
25
25
Note: The shape of the outdoor cover diers for
ver tical outdoor type specication.
Ｇ
■
Accessory Rectier (DC power supply unit)
Model HD-110M3
Outline drawing
Internal circuit (diagram)
Note : 1. Model HD-110M3 is an indoor model. Take care to avoid water, etc.
2. Transformer is necessary for operation with 400V class power source. Secondary voltage is 200 – 220V.
Items Specications
Rated input voltage AC200/220V 50/60Hz
Maximum input voltage AC240V 50/60Hz
Minimum input voltage AC170V 50/60Hz
Standard output
voltage
Instantaneous voltage DC180V (for AC200V input)
Steady voltage DC90V (for AC200V input)
Maximum output current DC1.8A (Steady output)
Over excitation time 0.4 – 1.2 s
Insulation resistance
100M or larger (When measured with 1000V
megohmmeter)
Insulation withstand voltage AC2000V for one time or more
Maximum frequency
Inching When on-time 1.2 s or less: 8 cycles/min
Constant When on-time exceeds 1.2 s: 30 cycles/min
Allowable ambient temperature
-
20
℃to
60
℃
Code Part Name
1 Center ring
2 Gap adjusting screw
3 Attachment bolt
4 Field
5 Brake coil
6 Actuating spring
7 Fan
8 Cover
9 Motor shaft
10 Fan set screw
11 Lock bolt
12 Armature
13 Inner disc
14 Outer disc
15 Spacer bush
16 Stopper
17 Hub
18 Brake adapter plate
19 Opposite drive end cover
20 Opposite drive end bearing
21
Opposite drive end bearing
cover
22 Brake cover
23 V-ring
24 Brake cover gasket
25 Outdoor cover
Note : 1. Motor conguration diers for
ventilated types.
2. There are 3 of [13][14] for ESB-250
(horizontal types) and 2 for ESB-250-2
(vertical types).
3. The outdoor cover [25] for ESB-250-
2 (the vertical types) has a dierent
shape.
Figure 8-31
Figure 8-32
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