Siemens Maxum II Reference Manual page 65

DPM-Based Temperature Control
The Base3 DPM has two temperature-control channels. Two RTD inputs feed two comparator
circuits to drive two heater-control outputs. The heater-control outputs connect to inputs on
the PECM in most analyzers. The control path is shown below.
Figure 2-30
A mounting location and connector are provided for two Temperature Setpoint Modules. The
modules are installed on the left side (back) of the DPM, shown below. This same position is
used in the
RTD Temp Control Inputs
2
I C
Temp Setpoint Module
Mounting Location
Figure 2-31 Temperature Setpoint Modules Installed on Left Side of Base3 DPM
Maxum II Reference Manual
Manual, 7/2017, 2000596-001
Electronic Compartment Component Descriptions and Maintenance Procedures
DPM
Temp
Compare
Setpoint
Modules
PECM
I 2 C
Airflow
Loss
Shutdown
Heater Control Path Using DPM
Temperature Control DPM .
Temp Setpoint Module
Mounting Screw Access
Status
LEDs
Analog
PWM
SSR Pair
Airflow Loss Temperature
Shutdown Control
AC
Line
SSRa SSRb
2.5 Detector Personality Modules
Air Bath Oven
Temp Control,
Temp Limit,
Overtemp RTDs
High-Wattage
Heater
Digital
Air Pressure
Switch
Heater
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