GEN7iB
233
INPUT CARDS
INPUT CARDS
12
Thermal shutdown in critical conditions
This protective scheme allows for any overload that the input could be confronted with
during normal operation. For any other failure that could result in excessive heat dissi-
pation, the GEN series probes have a last protective stage built in. When local tempera-
tures reach critical limits, the system automatically turns off the mains power to pre-
vent damage to the system or other systems near the GEN series system. Maximum
andcriticaltemperaturesaredenedassuchthatitisveryunlikelythesystemwould
everreachthesecriticaltemperatureswhenoperatingwithinitsspeciedconditions.
0HDVXUHORFDO
7HPSHUDWXUH
!&" !&"
!&$1'
6LJQDORYHUORDG"
&$1'
3URWHFWLRQDFWLYH"
QR
QR QR
5HSRUW$PSOLILHU
2YHU7HPSHUDWXUH
$FWLYDWH*1'
UHOD\
\HV
,QFUHDVHLQSXW
UDQJHE\IDFWRU
&XUUHQWO\DW
N9UDQJH"
\HV
\HV
QR
5HVWRUH*1'
UHOD\DQGLQSXW
UDQJH
\HV
QR
:DLWVHFRQGV
6KXWGRZQWKH
FRPSOHWHV\VWHP
$FWLYDWH*1'
UHOD\
$GG7LPH0DUNWR
UHFRUGLQJILOH
$GG7LPH0DUNWR
UHFRUGLQJILOH
$GG7LPH0DUNWR
UHFRUGLQJILOH
$GG7LPH0DUNWR
UHFRUGLQJILOH
\HV
Fig. 12.54 Automatic thermal overload response