PXU11AE0 Datasheet, PDF (19/32 Pages) Red Lion Controls. Inc – MODEL PXU - TEMPERATURE/PROCESS CONTROLLERS

ALARM 3 RESET MODE
3  _{ Automatic}
  ^{ Latched}
In Automatic mode, an energized alarm turns off automatically after the
Temperature/Process value leaves the alarm region. In Latched mode, an
energized alarm requires an 1 / 2 key or user input alarm reset to turn off. After
an alarm reset, the alarm remains reset off until the trigger point is crossed again.
3 
 
ALARM 3 STANDBY
 Standby on
 Standby off
Standby prevents nuisance (typically low level) alarms after a power up.
After powering up the controller, the process must leave the alarm region (enter
normal non-alarm area of operation). After this has occurred, the standby is
disabled and the alarm responds normally until the next controller power up.
3 
 300
ALARM 3 VALUE
 to 
The alarm values are entered as process units or degrees. They can also be
entered in the Parameter or Hidden Loops. When the alarm is configured as
deviation or band acting, the associated output tracks the Setpoint as it is
changed. The value entered is the offset or difference from the Setpoint.
INPUT FAIL ALARM 3 ACTION
IFA3  _{On OFF}
 OFF
Select the Alarm action in the event of a detected input failure (open TC/RTD
or shorted RTD).
 
1
ALARM HYSTERESIS
 to 
The Hysteresis Value is either added to or subtracted from the alarm value,
depending on the alarm action selected. The same value applies to both alarms.
See the Alarm Action Figures at the beginning of this section for a visual
explanation of how alarm actions are affected by the hysteresis.
CHANGE COLOR
Colr 
 OFF
OFF ANY AL-1 AL-2 AL-3
Select alarm(s) to change Input Display color intensity when appropriate
alarm(s) are triggered.
Shaded parameters are programming/model dependent.
7.5 MODULE 7 - Serial Communications Parameters (C)
7-SC
PARAMETER MENU
CNFP
P
P
tYPE bAUd
COMUNICATIONS
TYPE
BAUD
RATE
tYPE
rtU
COMMUNICATIONS TYPE
rtU ModBus RTU
ASC ModBus ASCII
Select the desired communications protocol.
dAtA
DATA
BIT

38K4
BAUD RATE
24 96 38K4
48 19K2
Set the baud rate to match that of other serial communications equipment.
Normally, the baud rate is set to the highest value that all of the serial
communications equipment is capable of transmitting.

8
DATA BIT

Select either 7 or 8 bit data word lengths. Set the word length to match that
of other serial communication equipment. If rtU is selected as the communication
type, dAtA defaults to 8.
PArb
PARITY
BIT
Addr
UNIT
ADDRESS
b
NO
PARITY BIT
NO v Odd
Set the parity bit to match that of the other serial communications equipment
used.

247
UNIT ADDRESS
1 to 247
Select a Unit Address that does not match an address number of any other
device on the serial link.
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