ZUP/NC402 TDK Corporation, ZUP/NC402 Datasheet - Page 41

• Manufacturer Part Number: ZUP/NC402
• Description: LAMBDA PART
• Manufacturer: TDK Corporation
• Series: ZUPr

Specifications of ZUP/NC402

• Connector Type: D-Sub 09 pos Male to RS485 8 pos Male
• Length: 3.28' (1.00m)
• Cable Type: Round
• Color: White
• Shielding: Shielded
• Usage: Communication
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 285-1667

4.4.14 Series Operation
1. GENERAL: Two power supplies of the same rating can be connected in series to increase the
2. Series connection for increased output voltage:
current limits of each power supply to the maximum that the load can handle without damage. It is
recommended to connect diodes in parallel to each unit output to prevent reverse voltage during start-
up condition or in case one of the units shuts down. Each diode should be rated to at least the power
supply’s output current. Refer to Fig: 4-12 and 4-13 for this operating mode.
Fig. 4-12: Series connection with local sensing.
When two power supplies are connected in series, they should be programmed to the same output
2.2 Remote programming at series operation for increased output voltage:
output voltage or to provide bipolar output voltage.
2.1 General: At this operation mode, two units are connected so their outputs are summed. Set the
SUPPLY
SUPPLY
POWER
POWER
is grounded, no point may be at a greater potential ( + or - ) from ground than that specified
When power supplies are connected in series, and the load or one of the output terminals
1. Programming by external voltage; The analog programming circuits of the ZUP power supply
2. Programming by external resistor: Programming by external resistor is possible. Refer to
3. Programming via the communication port (RS232/RS485): The communication port is isolated
are referenced to the - Sense potential. Therefore, the circuits used to control each unit must
be separated and floated from each other.
Fig. 4-5 and Fig. 4-6 for details.
from the output voltage, therefore power supplies connected in series, can be chained using
the Remote-in and Remote-out connectors.
voltage to prevent damage to the lower voltage supply at short circuit condition.
+LS
+LS
- LS
- LS
+S
+S
- S
- S
+
+
_
_
on the front panel marking.
+
_
LOAD
CAUTION
CAUTION
Fig. 4-13: Series connection, remote sensing.
SUPPLY
SUPPLY
POWER
POWER
+LS
+LS
- LS
- LS
+S
+S
- S
- S
+
+
_
_
+
_
LOAD