Schweitzer Engineering Laboratories SEL-351-5, Инструкция по эксплуатации

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2.11
Date Code 20070117
Instruction Manual SEL-351-5, -6, -7 Relay
Installation
Making Rear-Panel Connections
Models 0351x1 and 0351xY
Models 0351 x 1 and 0351 x Y have output contacts on the:
➤
main board
OUT101
–
ALARM
(ordered as standard output contacts only)
➤
extra I/O board
OUT201
–
OUT212
[ordered as standard or high-current
interrupting output contacts (all of one type or the other)]
Refer to the Specifications subsection General on page 1.13 for output contact
ratings. To determine the type of output contacts on the extra I/O board of
your Model 0351
x 1 relay, refer to the part number on the serial number sticker
on the relay rear panel.
Standard Output Contacts
Models 0351 x 1 and 0351 x Y part numbers with a numeral “2” in the field in
bold below (sample part numbers) indicate standard output contacts on the
extra I/O board (
OUT201
–
OUT212
):
0351 x 1H4254 2 X1
0351 x YH4254 2 X1
Standard output contacts are not polarity dependent.
High-Current Interrupting Output Contacts
Models 0351 x 1 and 0351 x Y part numbers with a numeral “6” in the field in
bold below (sample part numbers) indicate high-current interrupting output
contacts on the extra I/O board (
OUT201
–
OUT212
):
0351 x 1H4254 6 X1
0351 x YH4254 6 X1
High-current interrupting output contacts are polarity dependent. Note the
+
polarity markings above even-numbered terminals
B02
,
B04
,
B06
, ...,
B24
in
Figure 2.4 . The extra I/O board of the Model 0351 x 1 relay in Figure 2.3 does
not show these
+
polarity markings (because it is the rear panel for an extra
I/O board with standard output contacts).
As an example, consider the connection of terminals B01 and B02 (high-current
interrupting output contact OUT201 ) in a circuit:
Terminal
B02 (+)
has to be at a higher voltage potential than terminal
B01
in the
circuit.
The same holds true for output contacts OUT202 – OUT212 (if they are also high-
current interrupting output contacts).
Optoisolated Inputs
The optoisolated inputs in any of the SEL-351 models (e.g., IN102 , IN207 ) are
not polarity dependent. With nominal control voltage applied, each
optoisolated input draws approximately 4 mA of current. Refer to the
Specifications subsection
General on page 1.13 for optoisolated input ratings.
Inputs can be configured to respond to ac or dc control signals via Global
settings IN101D–IN106D and IN201D–IN208D.
NOTE:
Do not use the high-current
interrupting output contacts to switch
ac control signals.