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6.3 CONFIGURING THE ANALOG OUTPUT (EXAMPLE)
(FOR 4…20 MA / 3-WIRE ADJUSTABLE)
The analog output can be configured in the menus
ZP
(zero point) and
EP
(end point). The
following example shows how to use them:
In this example, the device has a measurement range of 0–400 bar (0–5800 psi).
The output analog signal:
0 bar (0 psi) = 4.00 mA
200 bar (2900 psi) = 12.00 mA
400 bar (5800 psi) = 20 mA.
If the value is changed from 0 to 20 in ZP and the EP value from 400 to 300, the output signal
changes as follows:
20 bar (290 psi) = 4.00 mA 160 bar (2320 psi) = 12.00 mA
300 bar (4350 psi) = 20 mA.
The values of ZP and EP are adjustable up to 1:5 of the nominal pressure range.
6.4 HYSTERESIS AND COMPARE MODE
The diagrams below show the operation of the switch outputs.
To reverse the relevant modes, you have to swap the values for the switch-on and switch-off
points.
Compare mode
Compare mode inverted
Hysteresis mode
Hysteresis mode
inverted
6.5 STRUCTURE OF THE MENU SYSTEM
2-
WIRE SYSTEM
3-
WIRE SYSTEM
6.6 DESCRIPTION OF THE MENU SYSTEM
Menu 1 – Access protection
PAon
password active
to deactivate: enter password.
PAof
password inactive
to activate: enter password.
The default password is “0005”; modification of the password is described in “Special menu
4”.
Menu 2 – Set decimal point position
Set the position of the decimal point!
Menu 2a – Indication of the start of the measuring range (zero point)
(only 4…20 mA / 3-wire adjustable)
Value defined in the order, no input option.
Menu 2b – Indication of the end of the measuring range (end point)
(only 4…20 mA / 3-wire adjustable)
Value defined in the order, no input option.
Menu 3 and Menu 4 – Set zero point / end point
&
The device has been configured correctly before delivery, so a later setting
of a 2-wire device is only necessary, if a differing displayed value is desired (e. g. 0 – 100 %).
For 4…20 mA / 3-wire adjustable: this menu has a different meaning. The configuration of the
zero point affects the analog output, whereas the display value remains unchanged (zero and
endpoint can be configured within the limits of the nominal pressure range, according to the
manufacturing label); for more information, see “6.3 Configuration the analog output (example).
(for 4…20 mA / 3-wire adjustable)".
Menu 5 – Set damping
This feature eliminates problems caused by rapidly changing pressure
values. By setting the time (0.3 – 30 sec), the current output signal can be delayed. The higher
the value entered, the longer it takes to reach the current pressure output signal's value.
Menu 6 – Excess value message
Set “On” or “Off”.
Menu 7, Menu 9 – Set switch-on point for switching output
(switching outputs S1, S2)
Set a switch-on value for the relevant output. (S1, S2 output
S1on
,
S2on
)!