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10-Channel, 24 VDC F Discrete Output MTA
Marshalled Termination Assemblies for ET200M Remote I/O Modules
184
A5E00482820-12
14.3
Operation
Power is supplied via the two removable power connectors which are retained by
screws and marked
L+A
,
MA
, and
L+B
,
MB
. Each has a LED to indicate the
presence of voltage over 15 VDC. The LEDs are marked
A POWER
and
B
POWER
. There is also a connector (
J3
) for a Power Monitor board used to indicate
the presence of both A and B power. See Section 19,
Power Monitor Board
(6ES7650-1BA02-0XX0).
Incoming power from
A
and
B
is diode OR’d, in
CR106
, to provide the MTA and
the module power from either input source. The output from
CR106
is sent to the
I/O modules via the module fuses and to the channels via the channel fuses.
Module Fuse 1 (
F100
) supplies the I/O Module plugged into
J1
and Module Fuse 2
(
F101
) supplies power to the I/O Module plugged into
J2
.
Field Terminals, C (
CHx+
), Channel – (
CHx-
), and Shield (
SHx
), connect
to the field devices.
CHx+
is the Channel Output power source and is fused (1.0A)
on a channel-by-channel basis.
CHx-
is the output device return. The field
termination connector is removable for ease of wiring maintenance and is retained
by friction.
The CHx+ connects to the I/O modules input via
J1
and
J2
. Redundant operation
uses two modules with one each connected to
J1
and
J2
. Redundant operation is
achieved by connecting the diode output from each channel on different modules
together. Non-redundant systems have one module connected to either
J1
or
J2
.
Connection from the MTA to the I/O Module is accomplished with a 40 pin Siemens
connector wired to a D25 female connector. This cable has larger wires than the
other cables because of the higher current capabilities of the module.
14.4
Installation Requirements
See Section 2,
, before performing any installation and observe all
warnings
A common interconnecting cable (6ES7922-3BD00-0AN0 or 6ES7922-3BJ00-
0AN0), supporting Failsafe 10-channel Discrete outputs, interconnects the discrete
output termination assembly to the 10-channel, 24 VDC discrete output module
(6ES7 326-2BF10-0AB0, E-Stand 3 or higher).
Note
To disconnect the interconnecting cable shield from ground at the MTA only, cut
and remove the shield disconnect jumper,
W100
and
W101
, for the associated
cable.
Summary of Contents for ET 200M
Page 8: ...Preface Marshalled Termination Assemblies for ET200M Remote I O Modules 8 A5E00482820 12 ...
Page 16: ...Contents Marshalled Termination Assemblies for ET200M Remote I O Modules 16 A5E00482820 12 ...
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