6253 DC Voltage Current Source/Monitor Operation Manual
4.2.11 Multiple Unit Operation
4-69
4.2.11.2 Serial Connection
Two 6253 units serially connected can generate up to 220 V/0.5 A.
The following figure shows a connection diagram in which two units are serially connected using a 4-wire
connection. The SENSE connection is not required for a 2-wire connection.
Figure 4-17 Serial Connection
CAUTION:
1. If the load is short-circuited, the two 6253 units apply reverse polarity voltage to each other.
Depending on the settings, an overload may be generated when a short circuit occurs.
2. Only two units can be connected serially. Do not connect three or more units serially.
If the load is short-circuited, the maximum applicable voltage will be exceeded, and the 6253
may be damaged.
3. When using constant current, the smaller setting current of No.1 and No.2 becomes
constant current as in Figure 4-17. The other one becomes the constant voltage.
Output voltage = No. 1 output voltage + No. 2 output voltage (for constant voltage)
Output current = The smaller of the currents set for No. 1 or No. 2 (for constant current)
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