Super Systems 9100 RPS - Manual (Page 5)

M4560 - Model 9100 Redundant Probe System
M4560 - Model 9100 RPS Page 5 of 10
About the Model 9100 – RPS:
The Model 9100-RPS is specifically designed to read two SSi Gold Probes, installed in the same furnace.
The Model 9100-RPS controller, a 24 VDC power supply, and two 24 VDC relays are mounted and wired on
a piece of DIN rail for easy mounting by the customer. Two other components included with the Model
9100-RPS are the operator interface and the cable connecting the operator interface to the Model 9100-
RPS.
Electrical Installation:
The Model 9100-RPS comes mounted on a DIN rail, pre-wired and tested. AC power needs to be connected
to the 24VDC power supply. See the section Typical Electrical Drawing for other required connections.
Model 9100-RPS Function:
The Model 9100-RPS reads a signal from each of the two oxygen probes located in the furnace. Depending
on the 9100-RPS configuration, it will select whichever millivolt reading it has been configured to select and
retransmit this millivolt output to the atmosphere controller.
The probe millivolt deviation band and the alarm delay times are set using the operator interface. See the
section Configuration for more information on how to use the operator interface. When connected per the
electrical drawing (section Typical Electrical Drawing ), the Model 9100-RPS default configuration is set to
retransmit the millivolt signal from the probe with the highest millivolt output. As time passes and if/when
the other probe’s millivolt output becomes greater (dependent on the deviation band), the Model 9100-RPS
will switch the output from one probe to the other and send the “new” higher (or lower, depending on the
configuration) millivolt signal to the atmosphere controller. The deviation band must be exceeded for the
retransmit to occur.
The asterisk (*) on the operator interface display indicates which probe’s millivolts are being used by the
furnace atmosphere controller. When the Model 9100-RPS switches the output from one probe to the other
it indicates a deviation band alarm condition, flashing an A on the operator interface. The red light in the
upper left corner of the operator interface will be lit as well in an alarm condition. The A continues to flash
until the probe’s output is back within the deviation band.
The operator can manually select the probe that is to be used in the carbon calculation. If this feature is
used, the 9100-RPS will use the operator selected probe, and NOT switch from one probe to the other
automatically. See the section
Configuration – Probe (Prb) Select Mode for more information on how to
manually select a probe.
The deviation alarm is disabled if both probes’ millivolts drop below 950. This should eliminate the nuisance
alarm when the furnace is loaded and the temperature drops.