Publication 4100-IN505A-EN-P - October 2000
Operation
3-5
The following table shows the Pin number and its signal name.
Enable Voltage
This provides a current limited supply to power the Enable input.
Enable Input
This input, which is opto-isolated, allows control of the ESRS via an
applied voltage in the range of 5 to 24V DC. The Enable voltage can
be applied with either polarity (AC voltages cannot be used). Voltage
must be applied to the Enable Input to make the chosen line
reference available. Removing the Enable voltage has the same effect
as selecting STOP on the SELECTION switch.
In situations where it is required to control the ESRS via volt free
contacts, the Enable voltage provided can be routed through these to
the Enable Input.
In cases where you supply the Enable voltage, the current required to
drive this input can be determined by calculating:
I
ENABLE
= (V
ENABLE
- 1.5) / 4700
Direction Output
This digital output indicates the phase of the quadrature pulse train.
The switched element is a relay with contact rating of 24V DC at 0.5 A.
The following table defines the functionality of the Direction Output.
Table 3.A P1 Pin Functions
Pin Number
Signal Name
1
Enable Voltage, +15V
2
Enable Voltage, 0V
3
Enable Input
4
Enable Input
5
Direction Input
6
Direction Output, 0V
Table 3.B Output Direction Values
Direction Output
Quad. Pulse Phase
ON
A leads B
OFF
B leads A
