Fema C Series, User Manual, Page: 17 / 32

FEMA ELECTRÓNICA . Series C . C40-D
17
1.29 Configuration menu (cont.)
Resistance
range 0 to 5 K
range 0 to 50 K
Scale the reading at the ‘ Scaling ’ (‘ ScAL ’) menu. Temperature ranges
(thermocouples, Pt and Ni probes, NTC and PTC probes) have direct
temperature indication and are not scalable.
To configure the scaling, enter the ‘
Decimal point ’ (‘ dP ’) parameter
and select the desired position for the decimal point, using key ‘LE’
(
3
).
Then configure at the ‘ Display Low ’ (‘ d.Lo ’) parameter the reading
value associated to the low signal range and configure at the ‘ Display
High ’ (‘ d.Hi ’) parameter the reading value for the high signal range.
For more information see section
1.21.
1.29.2 Scaling
Setpoint
Hysteresis
Alarm type Alarm 1
The instrument has 2 independent and configurable alarms.
Control the independent activation of relays A1 installed (optionally)
at slots 1 and 2
(see section 2.1)
from menu entries ‘
Alarm 1
’ (‘
ALr1
’)
and ‘
Alarm 2
’ (‘
ALr2
’). Alarms control also the activation of front leds
‘1’ and ‘2’ located as indicated at section
1.2.
To configure the alarms, enter at the alarm menu (‘ ALr1 ’, or ‘ ALr2 ’)
and configure the following parameters :
• at the ‘
Alarm type
’ (‘
TypE
’) parameter select alarm as as a max -
imum type alarm (‘
MAX
’) or a minimum type alarm (‘
MIn
’). The
maximum type alarm (or minimum type) activates when the dis -
play value is higher (or lower) than the setpoint value.
• at the ‘ Setpoint ’ (‘ SEt ’) parameter enter the value for the alarm
activation point
.
This parameter is eligible for configuration through
the ‘
Fast access
’ menu
(see section 1.20).
• configure the hysteresis value at ‘
Hysteresis
’ (‘
hySt
’). The hys -
teresis applies to the deactivation process of the alarm. The alarm
deactivates when the reading has passed the setpoint value plus
the hysteresis value. Hysteresis helps to avoid repetitive switching
of the alarm relays, due to fluctuating input signals around the set -
point.
1.29.3 Alarms
Ni1000
PTC probes
KTY 210 and 220 family
KTY 121 family
Scaling Decimal point
Display Low
Display High
NTC probes
res. at
25º
beta
RTD probes
Pt1000
Ni100
Ni200
Pt100 2 wires
Pt100 3 wires
• ‘ Resistance ’ (‘ rES ’) - select 5 K for a measuring range from 0 to
5 KOhms or select 50 K for a measuring range of 0 to 50 KOhms.
For a manual compensation for the error introduced by the signal
wires, see parameter ‘
Offset reading
’ (‘
oFFS
’)
(see section 1.22).
• ‘ Potentiometer ’ (‘ Pot ’) - potentiometer measure has a single
range, valid for any potentiometer with nominal value between
500 R and 20 K.
• ‘ Frequency ’ (‘ FrEq ’) - frequency measure has no selectable rang -
es. The instrument reads frequency up to 100 Hz, within accuracy
specifications. For more information on frequency measuring see
section
1.17.
Potentiometer
pt500
Frequency