SAB-QS Quick Start 4of 5November 9, 2000
Rapid Controls Inc.
Box 8390 § Rapid City, SD § 57709
Phone: 605-348-7688 § Fax: 605-341-5496
5. Dip Switch S1
Dip-switch S1 controls the speed of quadrature output and can be used to select setup parameters
instead of using menu-based setup. For 750 KHz output, set all switches off; for 375 KHz output, set
switches 1 and 5 on and all other switches off. For more information regarding dip-switch setup, see
the SAB-QS manual.
6. Strobe Inputs and Transducer Status Outputs (Connector JP1)
Connector JP1 is also used for strobe inputs and transducer status outputs. The two strobe inputs
command the SAB-QS to send the current position of the transducer over the quadrature channel. A
pulse less than 100 us will cause a relative position update. A pulse greater than 100 ms will cause an
absolute position output. More information on timing for the strobe inputs is available in the SAB-QS
manual.
The transducer status relay outputs show the status of the transducers. The relay contacts will be closed
when the transducer is operating properly.
The strobe inputs can be configured to be low or high-active by changing jumpers X4 and X5. For
low-active inputs install X4 and X5 1-2. For high-active inputs install X4 and X5 2-3.
The followings pins are used for the send all inputs and transducer status outputs:
Pin 6 is the strobe input for channel 0. Activating this input for less than 100 us will cause the
SAB-QS to send a position update for channel 0. Activating this input for more than 100 ms will
cause the SAB-QS to send the absolute position for channel 0.
Pin 7 is the strobe input for channel 1. Activating this input for less than 100 us will cause the
SAB-QS to send a position update for channel 1. Activating this input for more than 100 ms will
cause the SAB-QS to send the absolute position for channel 1.
Pin 8 is the I/O common.
Pin 9 is the channel 0 transducer status contact. A closed contact indicates a good transducer.
Pin 10 is the channel 1 transducer status contact. A closed contact indicates a good transducer.
7. Initial Power Up
After all connections are complete and have been checked for errors, apply power to the SAB-QS. The
red board status LED should blink. A green transducer status LED should light for each connected
transducer with a magnet.
If the board status LED does not blink when power is applied, check that your power connections are
correct (see section 1).
If your transducer is a PWM transducer, you must perform some setup before determining correct
transducer operation. Please perform the setup described in sections 7 and 8a before continuing with
this section.
If the transducer status LED(s) do not light, appear dim or flicker, check that the transducer magnet is
installed as prescribed in your transducer documentation. If the LED(s) still do not light, remove power
from the SAB-QS and verify all transducer connections.
If, after insuring the transducer connections are correct, the SAB-QS still does not light the transducer
status LED(s), verify that your SAB-QS model is capable of supporting your transducer. The SAB-QS-
