Parameter
Descriptions
Setting output cycle time to “00” initiates a 200 ms timebase. A cycle time setting is required for smooth
proportional action. Too long a setting will cause proportional ripple; too short will decrease relay contactor life.
When changing thermocouple types, be sure to check/adjust upper and lower setpoint limit values.
: The [ SP.tt ] parameter allows the operator to enter a time delay for the
process to reach setpoint temperature (ramp to setpoint), from disabled [ OFF ] or 1 to 100 minutes. When
enabled, the ramp sequence starts on power-up. The ramp-to-setpoint feature will also be initiated whenever
a new setpoint target time is entered AND the Setpoint Value is 5° F or more from the current process
temperature. In operation, the controller’s lower window display will flash
or
to indicate that it is
“ramping” up or down to setpoint. The Setpoint Value cannot be changed during this procedure. After it is
finished, the operator can adjust the setpoint temperature to the desired value.
While in ramp startup, the ramp-to-setpoint mode can be aborted and the controller returned to regular
operation by pressing the Parameter/Access key until parameters are displayed and then pressing the
Mode
key once.
Note: Shorter cycle times may be used when driving heater loads directly.
Display Parameter Available Selections
ALr1
Alarm 1 Preset Dependent on sensor range
ALr2
Alarm 2 Preset Dependent on sensor range
CY.t1
Cycle Time Output 1
0 to120 - seconds
CY.t2
Cycle Time Output 2
0 to120 - seconds
SP.tt
Setpoint Target Time
0 to120 - seconds
L.SP.L
Lower Setpoint Limit Dependent on sensor range
U.SP.L
Upper Setpoint Limit Dependent on sensor range
L.SCL
Low Scale Reading
-1999 to 9999
H.SCL
High Scale Reading
-1999 to 9999
MENU "03"
Output Type Recommended Setting (seconds)
B (5A/3A) 15 to 120
E (0-20 mA) 0.2
F (4-20 mA) be set to 0.2
S (pulsed 20 Vdc) 0.2
T (S.S. relay) 15 to 120**
Y (5A/3A) N.C. 15 to 120 (Output 2 only)
** “T” outputs directly driving non-inductive loads (small heaters) can have cycle times as low as 0.2 seconds.
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