Chapter 3 Programming
3-1 Lockout
Press for 3 seconds and release to enter setup menu. Press to select the desired parameter. The display
indicates the parameter symbol. Press or to view or adjust the value of the selected parameter.
Four security levels can be selected using the LOCK parameter.
If
is selected for LOCK, then all parameters are unlocked.
If
is selected for LOCK, then all setup menu parameters are locked.
If
is selected for LOCK, then all setup and user parameters (refer to
) except set point are locked.
If
is selected for LOCK, then all parameters are locked to prevent any changes.
NONE
SET
USER
section 1-5
ALL
NONE
SET
USER
section 1-5
ALL
3-2 Signal Input
How to use INLO and INHI:
If 4 - 20 mA is selected for INPT, let SL specifies the input signal low (ie. 4 mA), SH specifies the input signal high
(ie. 20 mA), S specifies the current input signal value, the conversion curve of the process value is shown as follows:
INHI
process value
PV
INLO
SL
SH
S
input signal
Figure 3.1
Conversion Curve for
Linear Type Process Value
Formula : PV = INLO + (INH
INLO)
INLO)
S SL
SH SL
Example : A 4-20 mA current loop pressure transducer with range 0 - 15 kg/cm is connected to input, then
perform the following setup :
2
INPT = 4 - 20 INLO = 0.00
INHI = 15.00 DP = 2-DP
Of course, you may select other values for DP to alter the resolution.
19
INPT:
Range:
UNIT:
Range:
DP:
Range:
INLO:
Selects the sensor or signal type for signal input.
(thermocouple) J, K, T, E, B, R, S, N, L
(RTD) PT.DN, PT.JS
(linear) 4-20mA, 0-20mA, 0-60mV, 0-1V, 0-5V, 1-5V, 0-10
Selects the process unit
°C, °F, PU (process unit ). If the unit is neither °C nor °F, then select PU.
Selects the resolution of process value.
(for T/C and RTD) NO.DP, 1-DP
(for linear) NO.DP, 1-DP, 2-DP, 3-DP
Selects the low scale value for the linear type input.
INHI : Selects the high scale value for the linear type input.
INPT:
Range:
UNIT:
Range:
DP:
Range:
INLO:
INHI :
