Data Instruments' latching magnetic cam switch (LMCS) has no separate ground
connection for the zero signal. The ground for power and the ground for the signal
are the same. Other switches requiring power may be the same. Check instructions
for your switch.
Figure 2-9. Connector for zero cam, remote reset and chart recorder
7. Plug the connector back into the socket. It only goes in one way. Verify the wiring.
8. If not done previously, adjust the cam switch so the zero signal comes on at 240°
and turns off at 30° (approximately). In other words, the switch should close to
ground between 240° and 30°.
9. The last thing you need to do is set DIP switch 2 on switch block S1 (refer to
location of components). You must set switch 2 to the right. With a ball point pen
(not a pencil) or your thumbnail, push the switch to the right—to the "zero cam
enable" position. See Figure 2-10. Make sure you push the switch all the way to
the right. Also, if power is on, press and hold the Reset button for at least two
seconds (toggle switch S2 must be set to "operate" before pushing Reset). This
must be done any time the switch is changed with power on. If power is off,
AutoSet automatically resets at start-up.
AutoSet 1500 User Manual
Figure 2-10. Zero cam enable switch.