Eaton easy500, easy700, Operating Instructions Manual, Page: 50 / 240

2 Installation
2.7 Expanding inputs/outputs .
46
Operating instructions 05/10 MN05013003Z-EN www.eaton.com
If inductive loads are not suppressed, the following applies:
• 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 (see the following diagrams).
Figure 34: Inductive load with suppressor circuit
2.6.3 Behavior in the event of a short-circuit/overload
Should a short circuit or overload occur on a transistor output, this output will
switch off. 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 condition persists, the output will keep switching off
and on until the fault is corrected or until the power supply is switched off
(
￫ section “6.4 Monitoring of short-circuit/overload with EASY..-D.-T..”,
page 192).
2.7 Expanding inputs/outputs .
You can add expansion units to the following easy700 devices in order to
increase the number of inputs and outputs:
U
emax <
U
z < 33 V
0 V H
Q..
+ 24 V H
0 V H
Q..
Expandable easy
basic units Expansion
Devices Features
EASY7..-..-R..
EASY7..-..-T.. EASY410-DC-.E 24 V DC power supply
• 6 DC inputs,
• 4 relay outputs (...-DC-RE) or
• 4 Transistor outputs (...-DC-TE)
EASY618-..-RE 115/230 V AC power supply
• 12 AC inputs,
• 6 relay outputs
24 V DC power supply
• 12 DC inputs,
• 6 relay outputs
EASY620-..-TE • 12 DC inputs,
• 8 transistor outputs
EASY202-RE 2 relay outputs
Note: Cannot be operated on an EASY7..- DA -R...
Special expansion units see current catalogue