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26
CN302
Contains the alarm output terminals (i.e., the alarm, HB alarm, HS alarm, and
error alarm), the input terminals from the E54-CT1 or E54-CT3 Current Trans-
former (CT). The OMRON DIN-compatible connector XC5C-6422 or equivalent
should be used for CN302.
CN501
Is used for RS-232C communications and is provided only on Controllers that
support RS-232C communications. The OMRON XM3B-2522-111 connector or
equivalent should be used for CN501.
CN502
Is used for RS-422 or RS-485 communications and is provided only on Control-
lers that support RS-422/485 communications. The OMRON XM3B-0922-111
connector or equivalent should be used for CN501.
TB301 (Terminal Block)
Is used to connect the thermocouples or platinum resistance thermometers. The
terminal section of this Terminal Block can be removed by loosening the screws
on both ends. To reinstall that section, alternately tighten the screws little by little.
Switches
The power must be turned off before changing any switch settings. Changes
made while the power is on will be invalid.
SW302
Is used to set the unit number that is used to identify the E5ZD-8H
jjj
M-E dur-
ing communications.
SW501
Is used to set the baud rate for communications.
SW502
Is used to set the type of sensor being used (i.e., either K or J for thermocouples,
and either Pt100 or JPt100 for platinum resistance thermometers) and the con-
trol temperature range.
SW503
Is used to set the functions that determine E5ZD-8H
jjj
M-E operation. These
include selection of either normal operation or the communications test
(loop-back test), communications or inputs designating the current memory
banks, the use of Celsius or Fahrenheit, and operation or non-operation when
power is turned on.
SW507 and SW508
Are terminator switches for activating the termination resistance when RS-422
or RS-485 communications are used. The switch must be on at the terminator.
(i.e. the E5ZD Controller located farthest from the host computer).
Others
Card Pullers
Are used to remove the E5ZD-8
jjj
-E when it is mounted to a rack. It is not
necessary when the E5ZD-8
jjj
-E is screwed in place.
Mounting Screws
There are eight mounting holes provided for mounting the E5ZD-8
jjj
-E.
2-2-2
Connector Allocations and Wiring
Allocations and wiring guidelines for CN1, CN2, and the Terminal Block are pro-
vided on the following pages. CN4 and CN5 are described in the
Section 2-1-4
Communications Interfaces
. CN3 is not for customer use.
CN301
Terminal Assignments
The following table shows the terminal assignments for CN301. The four DC+
terminals are internally connected, as are the four DC– terminals. The three
E5ZD-8
jjj
-E Hardware
Section 2-2
Содержание E5ZD
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