Setpoint relay (Pins 1,2,9, and 11)
The setpoint relay is driven while either of the following two sets of
conditions are true:
1.
The SPCe unit is powered up.
2.
The HV is enabled.
3.
The output voltage is high enough for a valid pressure to be read. By
default, this is greater than 2 kV.
4.
The calculated pressure is lower than the user-selected setpoint pressure.
OR
1.
The SPCe unit is powered up.
2.
The SPCe unit is in error mode.
Note:
There is a delay after turning on the HV until the SPCe considers the calculated
pressure reading to be valid. This reading can take up to one minute. The setpoint
relay will not be driven during this period.
Pin 1 is the relay common, pin 2 is the normally closed, and pin 9 is the
normally open contact.
Figure 51. Pressure output
Pin 11 is a TTL logic level output (with a 1 K resistor in series for protection),
which mimics the setpoint relay state. It is high whenever the set point relay
is driven.
04/2021 - ©Gamma
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900026_F
900026_F - Back panel operation
