Parker PDHX-E Series User Manual page 30

Output voltage levels will be determined by the value of the external voltage (Vuser) and the
value of the connected load.
The output circuit uses a connected pair of output transistors, consequently when the
NPN transistor is used, but is turned OFF, the external user voltage (Vuser) must be no
The characteristics of each output type are listed in Table 3-9.
Output Characteristics
Circuit configuration
Output current max.
Max. OFF signal voltage
Mode
Signal Type C
Signal type C inputs are used for differential, optically isolated, encoder TTL level inputs.
The maximum frequency handled by these inputs is 100KHz.
Signal Type D
Encoder supply of +5V DC at 150mA.
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Ext V
PNP
BCX51
OUTn
NPN
BCX54
Ext 0V
Figure 3-7. NPN or PNP Output Configuration
Caution - Possibility of equipment damage
greater than the external voltage (Vs).
Table 3-9. Signal Type B Output Characteristics
Vuser
External
load
NPN
Common emitter
300mA at 1V 100mA at (V s -2)V
sat
30V
Current sinking
PNP
Common emitter
sat
30V
Current sourcing