Eaton easyControl EC4-200, Руководство пользователя

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10/10 MN05003003Z-EN
Connecting outputs
25
Connecting transistor outputs
EC4P-221/222-MT…, EASY6…-DC-TE
Parallel connection:
Up to four outputs can be connected in parallel in order to increase
the power. This enables a maximum output current of 2 A.
If inductive loads are not suppressed, the following must be
observed: Several inductive loads should not be switched off
simultaneously to avoid overheating the driver blocks in the worst
possible case. If in the event of an Emergency-Stop the +24 V DC
power supply is to be switched off by means of a contact, and if
this would mean switching off more than one controlled output
with an inductive load, then you must provide suppressor circuits
for these loads (
a
following diagrams).
Behaviour with short-circuit/overload
A transistor output will switch off in the event of a short-circuit or
overload. The output will switch back on up to the maximum
temperature after a cooling time that depends on the ambient
temperature and the current level. If the fault continues, the
output will switch off and on until the fault is rectified or the power
supply is switched off.
EC4P-221/222-MT… EASY6…-DC-…
Figure 25: Transistor outpus EC4P-221/222-MT…, EASY6-DC-TE
0 V
Q1
S1 S2 S3 S4 S5 S6 S7 S8
Q2 Q3 Q4 Q5 Q6 Q7 Q8
F
10 A
Q
24 V
Q
0 V
Q
24 V
Q
F
10 A
f
2.5 A
f
2.5 A
0 V
H
24 V
H
EC4P-221/222-MT…
EASY6…-DC-TE
R L
Q5 – Q8
Q1 – Q4
5 W
3 W
0.5 A 24 V
H
0.5 A
24 V
(20.4 – 28.8 V
H
)
+ 24 V
H
R L
5 W/24 V
0.5 A
24 V
H
0.5 A
i
Caution!
Please note the following when switching off inductive
loads:
Suppressed inductive loads cause less interference in the
entire electrical system. It is generally recommended to
connect the suppressor as close as possible to the
inductance.
i
Caution!
Only outputs of the same group (Q1 to Q4 or Q5 to Q8)
can be connected in parallel; e.g. Q1 and Q3 or Q5, Q7
and Q8. Outputs connected in parallel must be switched
at the same time.
Figure 26: Inductive load with suppressor circuit
+ 24 V
H
Q., S.
U
emax
<
U
Z
< 33 V
0 V
H
Q., S.