Witt MFA 9000 User Manual

Page 30 of 46
WITT-GASETECHNIK GmbH & Co KG
Salinger Feld 4-8

: +49 (0)2302 89010
www.wittgas.com
Gas Safety- & Control Equipment
D-58454 Witten
Fax: +49 (0)2302 89013
witt@wittgas.com
7.5.2.3 Relay 1 Hysteresis
The Relay 1 Hysteresis menus give the user the possibility to set the hysteresis value for the relay
activation or deactivation in percent of the in Section 7.5.2.2 set threshold value. Have a look at the
R1 Mode to get information about the effect of the hysteresis.
7.5.2.4 Relay 1 Failsafe / Not failsafe
Each process alarm can be configured as Failsafe or Not Failsafe.
Failsafe means that the relay is closed as long as no error occurs. Thereby also power breakdown
is indicated by the opening of the relay contact.
Not Failsafe means that the relay is normally open and closes when an error appears.
Pressing <ENTER> the configuration will alternate between Failsafe and Not Failsafe.
Operation
Calibration
Diagnosis
Setup
Instr. Set.
Relay Set.
Output Set.
Expert Set.
A1 A2 Er
0.30
[%] H2/N2
Relay 1
Relay 2
------------
Common Relay
R1 Mode ***
Failsafe
Cal. active
ESC/OK
R1 Mode L/H
R1 Threshold
R1 Hyst.
ESC/OK
R1 Hyst.
set: 1.00000
new: 1.00000
[%]
ESC/OK
R1 M
ode
***
Fai
lsa
fe
Cal. active
ESC
/OK
R1
Mode ***
Not failsafe
Cal.
ac
tive
ESC
/OK
Oper
atio
n
Cal
ibr
ati
on
Diag
nos
is
S
etup
I
nst
r. Se
t.
R
ela
y Se
t.
Ou
tput Set.
Expert S
et.
A1 A2 Er
0.30
[%] H
2/N2
Rel
ay 1
Relay 2
-------
---
--
C
om
mon R
ela
y

Witt MFA 9000 Specifications

General

Brand	Witt
Model	MFA 9000
Category	Measuring Instruments
Language	English