Miscellaneous Features; Control/Programming; Status Flags; Setpoint Monitors - KEPCO HSM 3.3-230 Operator's Manual

1.4

MISCELLANEOUS FEATURES

1.4.1 CONTROL/PROGRAMMING a)VOLTAGE CHANNEL: Output voltage is controlled continu-
ously throughout the specified adjustment range via a 10-turn potentiometer accessed
through the top cover. External control can be exercised either by resistance or by control
voltage (see PAR.s 3.3 and 3.4).
b) CURRENT CHANNEL: Output current is controlled continuously throughout the specified
adjustment range via a 10-turn potentiometer accessed through the top cover. External
control can be exercised by control voltage (see PAR.s 3.5 and 3.6).
c) OVERVOLTAGE LEVEL: The output voltage level at which the overvoltage protection
latch is activated may be adjusted locally via a 10-turn potentiometer accessed through the
top cover (see PAR. 3.8).
d) REMOTE INHIBIT: Operation of the output regulator can be inhibited remotely via either
one of two TTL-level control lines, RC1 and RC2. Both of these signals are isolated from
both the input and output, allowing single-point control of several power supplies operating
at different potentials. Both positive and negative logic are supported (see PAR. 3.12).
1.4.2 STATUS FLAGS: Four sets of Form C dry relay contacts (3 wires each) are provided at the I/O
connector which duplicate the front panel status indicator functions (see PAR. 3.14).
1.4.3 SETPOINT MONITORS: Analog voltage signals which display programmed output voltage and
current limit values. These signals are available at the I/O connector (VSET and ISET). Signals
are referenced to negative error sense (see PAR. 3.7).
1.4.4 REMOTE ERROR SENSING: Separate voltage sensing connections permit 4-wire connection
to load. Will compensate for static load effects due to power lead d-c resistance (DCR) up to
specified maximum voltage drop per load lead at maximum specified output voltage (see PAR.
3.2).
1.4.5 LOAD SHARING: Bidirectional control port provides forced load sharing between two or more
power supplies wired in parallel (see PAR. 2.7.6).
1.4.6 LOAD MONITOR: Analog voltage signal which indicates actual load current delivered by the
power supply (see PAR. 3.13).
1.4.7 AUXILIARY SUPPLY: Logic-level secondary output provides up to 0.5 watts of power at 5V
d-c. This output is isolated from the output and is unaffected by the status of the main output.
Provides power for external Remote Inhibit controls (see PAR. 3.11).
1.4.8 OVERCURRENT/UNDERVOLTAGE PROTECTION: Switch-selectable option provides the
user load protection against long-term output overloads or undervoltage conditions (see PAR.
3.9).
1.4.9 CURRENT WALK-IN: Switch-selectable option provides control of output current rise rate
based on Bellcore TR-TSY-000947 requirements for battery chargers (see PAR. 3.10).
1.4.10 REMOTE RESET: Switch-selectable option provides capability to reset the latch used by the
overvoltage protection circuitry to disable the output regulator, using the Remote Inhibit control
lines (see PAR. 3.12).
HSMSERIES OPR 052912
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