ABB ControlMaster Series - Page 15

ControlMaster CM30 | Universal process controller,
1
/ 4 DIN | DS/CM30–EN Rev. L 7
Split output control
The CM30 can also be configured to perform split output
control, for example, when both heating and cooling of a single
process is required.
Remote auto / manual switching
In addition to switching via the front panel, the CM30 can be
switched between automatic and manual control mode using
an external signal. When switched to manual mode via a digital
signal, the value of the control output can be preset, for
example, to fully open a control valve automatically during a
cleaning cycle.
External setpoint selection
The CM30's control setpoint can be selected via external
digital signals, for example, simplifying operation by selecting
different setpoints using external push buttons.
Fig. 10: Split output control example
Fig. 11: Remote auto / manual switching
Steam
Water
TT
PV
O/P 1
O/P 2
FT
Run
Clean
Fig. 12: External setpoint selection
200 °C (392 °F)
150 °C (302 °F)
100 °C (212 °F)
50 °C (122 °F)