Parr Instrument 4848B - Manual (Page 22)

4848B Reactor Controller
P a r r I n s t r u m e n t C o m p a n y 20
4848B Factory Defaults
Navigating the Menu System/Factory
Default Settings
There are three broad categories of functions in the
4848B Controller modules. They are Regulation, Op-
eration, and Initial Settings. From the main screen,
Regulation mode is accessed by pressing the set
button. The Initial Setting mode is accessed by
holding the set button for three seconds. Operation
mode is accessed by pressing the circular arrow.
In each mode, you can cycle through the variables
by pressing the circular arrow. To change a value,
use the up or down arrow, which causes the value
to fl ash. Then press the set button to solidify the
choice. Return to the main screen by pressing set
again.
Keys command:
1. Press “SET” to select
2. Press return key move to next operation mode
3. Up/Down arrow keys to adjust value or select
type
Primary Temperature Module
Press return key and release
Operation
Mode
Select
type/value
Comment
r-S Run Run/Stop
SP 0** Decimal point position
AL1H 375 Upper alarm setting
LoC OFF Lock mode (lock all keys or
only up/down arrow able to
use)
Out1 - (read-only) Heater output %
Out2 - (read-only) Cooling output %
** If using a type-J or type-K thermocouple, SP = 0
If using an RTD, SP = 1
Press and hold down “SET” for 5-sec
Operation
Mode
Select
type/value Comment
InPt J** Input type
tPUn C Temperature unit
tP-H 800** Upper-limit range
tP-L 0 Lower-limit temperature range
CTRL PID Control mode (ON/OFF, MANU-
AL, PID and PID PROG)
S-HC H1C2 Output 1 is Heating and output
2 is Cooling
ALA1 6 Absolute upper limit alarm op-
erates when PV value is higher
than AL1H setting
ALA2 0 Alarm 2 is disabled
SALA OFF System alarm
CoSH ON Communication write function
that able to use set point from
software
C-Sl RTU Format type
C-no * Communication address
bPS 9600 Communication baud rate
Len 8 Data length setting
PrtY Even Parity bit setting
StoP 1 Stop bit setting
* See note on address at end of Factory Defaults
** If using a type-J thermocouple, InPt = J, tP-H = 800
If using a type-K thermocouple, InPt = K, tP-H = 800
If using an RTD, InPt = Pt, tP-H = 600
Press “SET” and release
Operation
Mode
Select
type/value Comment
At OFF Auto Tuning ON/OFF
PID0 0 The 0th PID Parameter
SV 0 The 0th SV
P0 11.8 Proportional control
I0 375 Integral control
D0 93 Derivative control
IoF0 0 Integral value offset
HtPd 5 Heat cycle control
HcPd 5 Cool cycle control
CoEF 1 1 & 2 value output group dur-
ing dual loop output control
dEAd 0 Dead band
tPoF * PV Offset
* Set at factory