User manual
Technical Data
Rated Voltage (Un) : 220 VAC, 230 VAC, 240 VAC, 24 VAC/DC
(115,127 V AC and 12 VAC/DC available upon request)
Operating Range : (0.9-1.1) x Un
Operating Frequency : 50/60 Hz.
Output Contact
: 1 Changeover 8A/2000 VA (NO: 8A, NC: 6A)Cosj =1
Repetition Error : +/-0.1%
Reset Time : <=150 msec.
Ambient Temperature : -5°C ; +50°C
Dimensions : Type PK22
Protection Class : IP 20
Connection :
Terminal connection, Rail-mount (Panel mount is
available with the plastic adapter part.
Refer to fig. 5)
Package Weight : 2.5 kg. (24 pcs. per package)
Dimensions
Connection Diagram
Caution:
1) Operating voltage must raise to the indicated value in less than 1sec.
2) Do not use with generator.
(Figure 5)
MULTIFUNCTIONAL TIME RELAYS
(MCB-7 MCB-8 MCB-9)
(TYPE PK 22)
35
23
12
19
T off
MCB8
Figure-4
Mode Selection (Function Table)
Example (MCB-7,9):
To set it to 5 hours;
If t
on
or t
off
trimpot is at position 3
PRECAUTIONS FOR INSTALLATION AND SAFE USE
Failure to follow those instructions will result in death or serious injury.
- Disconnect all power before installing the equipment.
- When the device is connected to the network, do not remove the front panel.
- Do not try to clean the device with solvent or the like.Only clean with dry cloth.
- Verify correct terminal connections when wiring.
- Electrical equipment should be serviced only by your component seller.
- Device is for panel mount only.
- An F type fuse with 1 ampere limit current value must be used.
19
61
90
28
48
58
45
A5312/Rev.3
TIME
INTERVAL
ADJUSTABLE
TIME RANGE
TIME TABLE
No responsibility is assured by the manufacturer or any of its subsidiaries
for any consequences arising out of the use of this material.
MCB9
MCB7
U
1-ER Function
T on
U
2-EM Function
T on
U
T off
3-OFF Flasher
T off
U
T on
4-ON Flasher
A2
A1
1
3
2
A3
MCB 7-8-9
A1-A2 : 115/127/220/230 VAC
(+) A3 - (-) A2 : 12 VAC/DC
24 VAC/DC
t
rimpot position
=30s
3
10
t=
.30sec
= 9 sec
10
0
8
6
4
2
time range
upper limit
10
0
8
6
4
2
t
rimpot position
=10h
10.5
10h
x=
= 5
Desired time
time range
upper limit
MCB-7
1 sec
30 hours
10 sec
30 sec
60 sec
10 min
60 min
10 hours
0.1-1 sec
0.1 sec-30 h
0.1-10 sec
0.1-30 sec
0.1-60 sec
0.1 sec-10 min
0.1 sec-60 min
0.1 sec-10 h
MCB-7
Example (MCB-8):
x10 x1 x0.1
Mode
Adjusted
Time
2 4 6 1s
24.6 seconds
2 4 6 10s
246 seconds
2 4 6 1m
24.6 minutes
2 4 6 10m
246 minutes
TIME
INTERVAL
MCB-9
5 sec
30 hours
10 sec
30 sec
60 sec
10 min
60 min
10 hours
ADJUSTABLE
TIME RANGE
0.5-5 sec
3 hours-30 hours
1-10 sec
3-30 sec
6-60 sec
1 min-10 min
6 min-60 min
1 hours-10 hours
MCB-9
30h
10h
1s
10s
60m
10m
60s
30s
30h
10h
1s
10s
60m
10m
60s
30s
=
=
3 2 1
t
ON
ON
OUT
t
OFF
1s
10 s
30h
10h
60m
10m
60s
30s
10
8
6
4
0
2
10
8
6
4
0
2
MCB-7
MCB-7
MCB-8 is a time relay that works as ER Mode or
EM Mode according to the users needs. It can
be adjusted between 0,1 seconds and 999 minutes.
MCB-8
ER MODE
EM MODE
MCB-9
ER MODE
EM MODE
FLASHER
ON FLASHER
OFF FLASHER
MCB-9 is a time relay that works as ER Mode,
EM Mode, ON Flasher or OFF Flasher according
to the users needs. It can be adjusted between
0,5 seconds and 30 hours.
x1
x10
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
x0.1
0
1
2
3
4
5
6
7
8
9
10s
1m
10m
10m
1m
10s
1s
1s
10s
1m
10m
10m
1m
10s
1s
1s
MCB-7, MCB-8, MCB-9
are microprocessor-based electronic time relays. They have precisely
adjustable time ranges (between 0,1 s-30 hours for MCB-7; 0,1 s-999
minutes for MCB-8; 0,5 s-30 hours for MCB-9) and up to 4 different
operating modes. Wtih their thin and narrow designs, these time relays
are designed for multi-purpose applications.
x
10
t=
.a
a
10.t
X=
and
Adjusting The Times
Adjusting the ON and OFF Times
MCB-8:
x10 trimpot is used to adjust the tens digit of the desired time, x1
trimpot is used to adjust the ones digit of the desired time and x0.1 trimpot
is used to adjust the tenths digit of the desired time.
Example: When the trimpots are adjusted as x10=2, x1=3, x0.1=6, Mode=1s;
the relay does the desired function after a 24.6 seconds delay.
MCB-7/9: The ON-OFF time is adjusted according to the following formula
by using the time range selection trimpot on MCB-7 and by using the
switches numbered as 1-2-3 and toff or ton trimpots on MCB-9:
a, limit of the selected time range;
t, desired time;
x, trimpot position;
ER MODE
EM MODE
MCB-7 is a time relay that works as ER Mode or
EM Mode according to the users needs. It can
be adjusted between 0,1 seconds and 30 hours.
0
1
2
3
4
5
6
7
8
9
x10
0
1
2
3
4
5
6
7
8
9
x1
x0.1
0
2
3
4
5
6
7
8
9
10s
1m
10m
10m
1m
10s
1s
1s
ON
OUT
MCB-8
1
2
3
4
5 6
7
8
9
10
ON
OUT
MCB-9
OFF ON
FL TIM
1
2
3
1
2
3
t
on
t
off
}
}
101
2
3
4
5 6
7
8
9
t
on
t
off
1