PSO Interface [-EB1]

The Position Synchronized Output (PSO) signal is available on the -EB1 option board in two signal formats: TTL and Isolated.

The PSO signal is also available on the AUX I/O connector. Refer to Position Synchronized Output (PSO).

You cannot use a sine wave encoder with the -MX1 multiplier option as an input to the PSO. The -MX1 option does not generate emulated quadrature signals.

Table 3-15: PSO Specifications [-EB1]

Specification		Value
Output	TTL	5 V, 50 mA (max)
Output	Isolated	5-24 V, 250 mA
Maximum PSO Output (Fire) Frequency	TTL	12.5 MHz
Maximum PSO Output (Fire) Frequency	Isolated	5 MHz
Output Latency [Fire event to output change]	TTL	15 ns
Output Latency [Fire event to output change]	Isolated	160 ns

Table 3-16: PSO Interface Connector Pinout [-EB1]

Pin #	Description	In/Out/Bi
1	PSO Output+	Output
2	PSO Output-	Output
3	PSO Output (TTL)	Output
4	Ground	N/A

Table 3-17: PSO Interface Mating Connector Ratings [-EB1]

Specification		Description
Type		4-Pin Terminal Block
Part Numbers		Aerotech: ECK02399
Part Numbers		Phoenix: 1768004
Conductor Cross Section	Solid or stranded	20...26 AWG (0.14...0.5 mm²)
Conductor Cross Section	Stranded, with ferrule, without plastic sleeve	20...24 AWG (0.25...0.5 mm²)
Conductor Insulation Strip Length		8 mm (5/16 in)
(1) Refer to the manufacturer website for additional information.

Isolated Signals

This output signal is a fully-isolated 5-24V compatible output capable of sourcing or sinking current. This output is normally open and only conducts current when a PSO fire event occurs.

The PSO Isolated Outputs are overload protected and will turn off if the maximum output current is exceeded.

Figure 3-9: PSO Output Sources Current	Figure 3-10: PSO Output Sinks Current

TTL Signals

This output signal is a 5V TTL signal which is used to drive an opto coupler or general purpose TTL input. This signal is active high and is driven to 5V when a PSO fire event occurs.

Figure 3-11: PSO TTL Outputs Schematic