13
SECONDARY MENU SETTINGS
P-n1 Control Action & Sensor Burn-out Protection: The
Control Action is the direction of the output relative to
the process variable. The PXZ can be programmed as
either a reverse or direct acting controller. As a reverse
acting controller, the PXZ’s output decreases as the
process variable increases. A heating application would
require reverse acting control. As a direct acting con-
troller, the PXZ’s output increases as the process vari-
able increases. A cooling application would require
direct acting control. Enter the code from the Table of
Output Type Codes which establishes the PXZ as either
a reverse or direct acting controller.
The Sensor Burn-out Protection is the intended direc-
tion of the output in the event of a thermocouple or RTD
sensor break, or a break in the analog input. The PXZ
can be programmed with either upper-limit or lower-
limit burn-out direction. With Upper-limit Burn-out, a
100% output will be delivered in the event of a sensor
burn-out. With Lower-limit Burn-out, 0% output will be
delivered in the event of a sensor burn-out. Enter the
appropriate code from the Table of Output Type Codes.
Refer to Error Messages on page 15 for more details.
P-n2 Input type: The Input Type is the type of sensor to be
used with the PXZ controller in sensing the process
variable. The Input Type must be correctly programmed
into the controller in order for the controller to perform
with the selected sensor type. Depending on the type of
sensor to be used, the PXZ comes in two models. One
model accepts J, K, R, B, S, T, E, N thermocouples and
RTDs (Pt100). The other model accepts 1-5/0-5V DC and
4-20/0-20mA DC signals.
The current/voltage model comes with a 250Ω precision
resistor. Wired directly to the controller, it would con-
vert a current signal into a voltage signal. There is no
need to use the resistor if a voltage signal is applied
directly.
After the appropriate physical changes have been
made, the controller still needs the correct code for the
Input Type to be used. Enter the appropriate code.
Table of Output Type Codes
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Single
Dual
Output 1
Reverse
action
Direct
action
Reverse
action
Direct
action
Reverse
action
Direct
action
Output 2
---
Direct
action
Reverse
action
Output 1
Lower limit
Upper limit
Lower limit
Upper limit
Lower limit
Upper limit
Lower limit
Upper limit
Lower limit
Upper limit
Lower limit
Upper limit
Lower limit
Upper limit
Lower limit
Upper limit
Lower limit
Upper limit
Lower limit
Upper limit
Output 2
---
Lower limit
Upper limit
Lower limit
Upper limit
Lower limit
Upper limit
Lower limit
Upper limit
Control action
Burn-out direction
Code
Output type
P-dF Input Filter Constant: The Input Filter is used to filter
out the quick changes that occur to the process vari-
able in a dynamic or quick responding application
which makes the PXZ control erratically. By slowing
down the response time, the PXZ controller averages
out the peaks and valleys of a dynamic system which,
in turn, stabilizes the control. The Digital Filter also
aids the PXZ in controlling processes where the elec-
trical noise is affecting the input signal. The larger the
value entered, the more filter added and the slower
the controller reacts to process variable changes. The
smaller the value entered, the less filter added and the
quicker the controller reacts to process variable
changes. Enter as small a value as possible at which
the PXZ maintains accurate and stable control.
Setting range: 0.0-900.0 secs
P-SL Lower Limit of Input Range:
P-SU Upper Limit of Input Range: The Lower Limit and the
Upper Limit of Input Range establish the desired high
and low limit for the type of input used. The Lower limit
must be greater than or equal to the input type’s lower
limit, while the Upper Limit must be less than or equal
to the input type’s upper limit. Setpoint settings are
restricted to values between P-SL and P-SU.
Parameter values that are calculated as a percentage
of full scale are affected by these settings. An under-
scale or an overscale error is indicated if the process
value goes below or above the range by 5% of full
scale. The primary purpose of these parameters when
used with thermocouple or RTD inputs is to limit set-
point settings. When an analog input is used, the sig-
nal is scaled for the engineering unit range selected.
For example, when a 4-20 mA input is used, the value
of P-SL corresponds to 4mA and the value of P-SU
corresponds to 20 mA.
The engineering unit range could be %, PSI, pH, or any
range which can be scaled between -1999 and 9999
units.
Refer to the Table of Input Type Codes above to deter-
mine the measuring range for a particular input type.
RTD (IEC)
Thermocouple
DC current/
voltage
Pt100Ω
Pt100Ω
Pt100Ω
Pt100Ω
Pt100Ω
Pt100Ω
Pt100Ω
Pt100Ω
J
J
K
K
K
R
B
S
T
T
E
E
N
PL-I I
0-20mA/
0-5V
4-20mA/
1-5V
0 to 150
0 to 300
0 to 500
0 to 600
-50 to 100
-100 to 200
-150 to 600
-150 to 850
0 to 400
0 to 800
0 to 400
0 to 800
0 to 1200
0 to 1600
0 to 1800
0 to 1600
-199 to 200
-150 to 400
-0 to 800
-199 to 800
0 to 1300
0 to 1300
Range of
measurement
(°C)
32 to 302
32 to 572
32 to 932
32 to 1112
-58 to 212
-148 to 392
-238 to 1112
-238 to 1562
32 to 752
32 to 1472
32 to 752
32 to 1472
32 to 2192
32 to 2912
32 to 3272
32 to 2912
-328 to 392
-238 to 752
32 to 1472
-328 to 1472
-32 to 2372
32 to 2372
Range of
measurement
(°F)
O
O
O
O
O
O
O
X
O
O
O
O
X
X
X
X
O
O
O
O
X
X
With
decimal
point (°C)
O
O
O
X
O
O
X
X
O
X
O
X
X
X
X
X
X
X
X
X
X
X
With
decimal
point (°F)
-1999 to 9999
(Scaling is possible)
X =Disabled
O= Enabled
1
2
2
3
3
3
4
5
6
7
7
8
8
12
13
1
1
1
1
1
1
1
15
16
Input Signal
Code
Table of Input Type Codes
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