Ariens Path-Pro 136E User Manual Page 72
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PID:
PID
control:
Proportioning control with auto-reset and rate.
PRG:
set
This parameter
determines
whether the
ramp as a function of time or ramp rate.
point
Process
Variable:
Programmed
display
data:
Proportional
band:
Proportioning
control:
PWR:
RAH:
RAL:
Rate:
Rate Band:
RB
C:
RB
H:
RS
C:
When ACCESS (1) is entered in the Series
920,
the
PID
parameters will appear. These parameters consist of Propor-
tional, Integral (auto reset), and Derivative (rate) actions.
Thermal system element to be regulated, such as time
temperature, relative
humidity,
etc.
will
Displayed information which gives the operator/programmer
the “programmed” or intended process information, i.e.,
intended set point, intended aiarm limit, etc. See
"Actual
displayed data”.
The span of temperature about the set point where time
proportional control action takes place.
See Time proportioning control.
Allows the operator to control the outputs manually . Full cool is
-100, 0
is cool and heat off, and 100 is full heat. This parame-
ter takes priority over the
LOPWR
and
HIPWR
parameters.
Represents a high limit to set point. The
default
values are also
the high limits of
your
input type. This parameter will not
appear if DIP switch
#7
is ON.
Represents a low limit to set point. The
default values
are also
the low limits of your input type. This parameter will not appear
if DIP switch
#7
is ON.
Anticipatory action that senses the rate of change of tempera-
ture and compensates to minimize overshoot. Also
"deriva-
tive”.
A thermal control band that defines where the rate (derivative
)
function begins. A Watlow rate band occurs centered on set
point at one or more times the width of the proportional band.
The thermal control band for cooling that defines where the
rate (derivative) function begins. This parameter will not
appear if OUT = CL or PBC = 0.
A thermal control band for heating that defines where the rate
(derivative) function begins. This parameter will
not
appear if
OUT = CL or PBH = 0.
Reset (integral) cooling control action that automatically
eliminates offset, or “droop”, between set point and actual
process temperature in a proportional control. Expressed in
repeats per minute. This parameter will not appear if OUT
=
HT or PBC = 0.
72
WATLOW Series 920 User’s Manual
Appendix
- Series 920 1
- Safety Information 2
- Your Program 3
- Contents 4
- Figures, Tables and Charts 5
- Chapter 1 6
- Starting out with the 6
- Watlow Series 920: 6
- Packing List 7
- How to Open the 920 8
- How to Set the DIP Switches 8
- User’s Manual 9
- Operating 10
- Chapter 11
- Keyboard Area 13
- Where To Go From Here 13
- A Brief Overview 14
- Enter Real Time of Day 14
- Before Entering Your Program 15
- Programming. File 1 15
- Step 4 must be 16
- Editing Your Program 17
- Adding an AUTOSTART Step Type 17
- Running Your Series 920 19
- Chapter 4 20
- How to Check for Ground Loops 22
- Noise Suppression Devices 22
- Available from Watlow 22
- C.M.Line Filter 23
- Installation Information 24
- Installation Procedure 24
- How to Wire the Series 920 25
- Power Wiring 26
- T.C. Compensation 27
- Load from 30
- Temperature Conrol 32
- How to Tune the Series 920 33
- Series 920 User’s 34
- Chapter 6 36
- How To Program The Series 920 36
- Event Outputs 37
- Guaranteed Soak 37
- The Four 38
- JUMPLOOP 38
- Rules to Follow 39
- SYSTEM Menu 40
- .:.:.:.: 41
- SETUP Menu 42
- Represents the 45
- PROGRAM Menu 49
- StepType 50
- To Program 52
- 920, Chapter 6 52
- Chart I- Master Step Chart 53
- Chapter 7 54
- Alarm Types 55
- The Operating Band 56
- Alarm Limits 57
- Clearing An Alarm Message 58
- An Alarm And The State 58
- The Alarm Relay 58
- Appendix 59
- Series 920 Specifications 59
- 920 User’s Manual 60
- 61
- Type J, K, or T 62
- Reference Compen 62
- Equipment Required 63
- Setup and Calibration 63
- @)(sJ(g; 64
- Glossary 67
- Accepts the sensor input and 68
- Isolation: 70
- ON/OFF control: 71
- WATLOW Series 920 73
- Manual 73
- Thermal System: 74
- Safety Information, 2 76
- Warranty Information 77
- Returning Merchandise 77
- Shipping Claims 77
- Series 920 Error Codes/Alarms 78
- Clearing an Error Code 79
- How to Clear an Alarm Code 79
- Series 920 Quick 80
- Reference 80
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