SECTION 1
M51A OPTION OVERVIEW
1.1 Introduction
This manual is to be used in conjunction with the
DCS-E 1kW Series & DCS-E 1.2kW Series
DC Power Supplies
Operation Manual
, Sorensen Document No. M362500-01 and the
DLM-E
3Kw & 4Kw Series Power Supplies Operation Manual,
Sorensen Document No. M362000-01.
The Sorensen M51A Option provides a remote isolated analog programming interface, which
has safety isolation from the output terminals. This allows the remote analog interface to be
connected to user–accessible, Safety Extra Low Voltage, (SELV) control circuits, even though
the output terminals are floated at a high potential with respect to the chassis.
1.2 General Description
The M51A Option provides isolation for all programming, monitoring, and digital I/O signals that
are available through the standard rear panel analog interface connector. This isolation barrier
eliminates the connection that exists in the standard models between the non-isolated remote
interface circuits and the power supplies output return (negative) terminal. All control and
monitoring signals on the M51A option are optically coupled from the power supply output, and
can are user accessible irrespective of the float potentials that could exist at the output
terminals.
The M51A Option provides a full complement of programming, monitoring, and control
functions. Remote programming is available for output voltage, current, and overvoltage
protection (OVP). Analog output monitor signals are available for the output voltage and
current. Digital I/O signals provide indication of the operational state, and a means of enabling
the remote interface and the output.
The type and range of the control and monitor signals are user-selectable with a rear panel
setup switch and connector jumpers. The output voltage, current, and OVP can be programmed
with a 0-5VDC, 0-10VDC, or 0-5k
Ω
resistance; in addition, the output voltage and current can
be programmed with 4-20mA signals. The output voltage and current monitors can produce
0-5VDC, 0-10VDC, or 4-20mA signals. Isolated 1mA current sources are provided to facilitate
the utilization of 0-5k
Ω
programming resistances.
Except for the isolated remote analog interface, the installation and operation of the power
supplies remains as presented in the Operation Manual. The following sections provide a
detailed description of the new features and the differences in operation.
M51A Option
1-1
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