AMETEK DLM 600W Series - Manual (Page 22)

DLM 600W Series
M362161-01 K 1-6
Fault Shutdown: Supervisory circuits monitor for abnormal operation of internal
circuits: overtemperature, logic supply fault, paralleling interface connection fault,
cooling fan fault, output converter driver fault, output converter overcurrent fault. A fault
condition will result in shutdown of the output converter, and the output capacitors will
be discharged with the downprogrammer. The unit can be restarted by cycling the AC
POWER switch off and back on, cycling the OUTPUT switch, or by momentarily
activating the remote shutdown.
Parallel Operation: Up to four units of the same model can be connected in parallel. A
master/slave paralleling interface is used for forced current sharing between the units.
The master unit has programming control of the output voltage, current, or OVP. The
current display of each unit shows its contribution to the total load current. The voltage
display of the master unit shows the load voltage, while the voltage displays of the slave
units are blanked out. A fault condition occurring within a unit will result in shutdown of
all units. A paralleling interface cable is used to route control signals between the units.
Series Operation: Multiple units can be connected in series, limited by the 300V(PK),
maximum float voltage of the output terminals of each unit to chassis ground. The
output of each unit is set individually, and each unit displays its own output voltage and
current.
1.4.4 Remote Analog Interface Characteristics
Remote Voltage Programming: The output voltage, current and OVP can be
programmed from zero to full scale with an external voltage source with a user–
selectable range of either 0–5 VDC or 0–10 VDC. The analog programming circuitry is
not isolated from the output negative (return) terminal.
Remote Resistance Programming: The output voltage, current and OVP can be
programmed from zero to full scale with an external resistance of 0–5 k
. The analog
programming circuitry is not isolated from the output negative (return) terminal.
Remote Resistance Programming Accuracy: Output Voltage = 1.5% of Vmax
Output Current = 2.5% of Imax
OVP = 2.0% of 1.1
 Vmax
Remote Monitors: Monitors for the output voltage and current provide a proportional
analog signal with user selectable ranges of 0–5 VDC or 0–10 VDC, corresponding to
zero to full scale of the output parameter.
Monitor Accuracy: Voltage Monitor, 5V Range = 0.5% of Vmax
Voltage Monitor, 10V Range = 0.75% of Vmax
Current Monitor, 5/10V Ranges = 1.0% of Imax