Emerson Tescom ER5000 Series User Manual

ER5000 —
234
Internal Variables
dependent and typically has a value close to 10. Larger
values can give tighter regulation, but at a cost of more gas
being exhausted.
48 ID_MIN_EXHAUST
This is the minimum value for the exhaust pulse width modulator.
The pulse width modulator’s value ranges from 0 to 250. This
variable, along with variable #47 (ID_MIN_INLET), sets the
deadband for the system. This variable is solenoid dependent and
typically has a value close to 10. Larger values can give tighter
regulation, but at a cost of more gas being exhausted.
65 ID_PWM_VALUE
This is the value which controls the pulse width modulators
for the solenoids. Positive values represent the inlet solenoid
opening and negative values are for the exhaust solenoid. A
value of +/-250 represents a 100% duty cycle (full on).
121 ID_SUSPEND
This is the state of the Suspend Mode input signal. When
suspend mode is activated (1 => Activated) the inlet and
exhaust valves remain fully closed and the PID algorithm is
suspended. When it is deactivated (0 => Deactivated) the
control returns to normal operation.
ER5000 Gain/Offset Variables
39 ID_GAIN
This is the gain value. This value, in conjunction with the
offset stored in variable #40 (ID_OSET) is used to form the
feedback signal. See variable #44 (ID_FEEDBACK):
feedback = gain
*
compensated_reading + offset
• 0x0200 => 1/8 ( .2% adjustability)
• 0x1000 => 1 (.025% adjustability)
• 0x8000 => 8 (.003% adjustability)
40 ID_OSET
This is the offset value. This value, in conjunction with the
gain stored in variable #39 (ID_GAIN) is used to form the
feedback signal. See variable #44 (ID_FEEDBACK):
feedback = gain
*
compensated_reading + offset
• 0x0000 => -1/2 FS
• 0x0fff => +1/2 FS

Emerson Tescom ER5000 Series Specifications

General

Brand	Emerson
Model	Tescom ER5000 Series
Category	Controller
Language	English