4838 Reactor Controller
18
4838 Factory Defaults
Navigating the Menu System / Factory
Default Settings
There are three broad categories of functions in the
4838 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 %
** 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,
MANUAL, PID and PID
PROG)
S-HC
HEAT
Output 1 is Heating
ALA1
6
Alarm operates when PV
value is higher than AL1H
setting or PV value is
lower than AL1L setting
ALA2
0
Alarm 2 is disabled
ALA3
0
Alarm 3 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
1
Communication address
bPS
9600
Communication baud
rate
Len
8
Data length setting
PrtY
Even
Parity bit setting
StoP
1
Stop bit setting
** 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
CoEF
1
1 & 2 value output group
during dual loop output
control
tPoF
0
Inaccuracy adjustment
