KEPCO HSP Series Operator Manual - Manual (Page 11)

HSPSERIES OPR 050614
1-5
1.4 MISCELLANEOUS FEATURES
1.4.1 CONTROL/PROGRAMMING
a) VOLTAGE CHANNEL: Output voltage is controlled continuously throughout the specified
adjustment range via a 10-turn potentiometer mounted behind the front panel. 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 mounted behind the front panel. 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 INDICATORS/FLAGS
a) STATUS INDICATORS: Four LED indicators at the front panel provide the following opera-
tional information (see PAR. 3.14):
• POWER: Green; lit when source voltage is above minimum required to support rated
load.
• DCFAIL: Red; lit when output voltage is beyond regulation limits or when load current is
below minimum load sharing requirement.
• OVERTEMP: Amber; lit when internal overtemperature protection is activated.
• FANFAIL: Red; lit when internal cooling fan failure is detected.
b) 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 both at the front panel test points (V
O
and I
MAX
)
and 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
HSP (or HSM) series 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
HSP power supply (see PAR. 3.13).