RTD-box Settings
If temperature detectors are used with two-wire connection, the line resistance (for short-circuited tempera-
ture detector) must be measured and adjusted. For this purpose, select mode 6 in the RTD-box and enter the
resistance value for the corresponding temperature detector (range 0 to 50.6 Ω). If a 3-wire connection is
used, no further settings are required to this end.
A baudrate of 9600 bits/s ensures communication. Parity is even. The factory setting of the bus number 0.
Modifications at the RTD-box can be made in mode 7. The following convention applies:
Table 2-15 Setting the bus address at the RTD box 7XV5662
Mode Address
simplex RTD 1 to RTD 6: 0
half duplex RTD 1 to RTD 6: 1
RTD 7 to RTD 12: 2
Further information is provided in the operating manual of the RTD-box.
Processing Measured Values and Messages
The RTD-box is visible in DIGSI as part of the 7SJ61 protection devices, i.e. messages and measured values
appear in the configuration matrix similar to those of the internal functions, and can be configured and
processed in the same way. Messages and measured values can thus be forwarded to the integrated userde-
fined logic (CFC) and interconnected as desired. Pickup signals
RTD x Anr. St. 1
and
RTD x Anr. St.
2
, however, are neither included in the group alarms 501
Relay PICKUP
and 511
Relay TRIP
nor do they
trigger a trip log.
If it is desired that a message should appear in the event log, a cross must be entered in the intersecting box
of column/row.
Settings
Addresses which have an appended “A” can only be changed with DIGSI, under “Additional Settings”.
Addr.
Parameter Setting Options Default Setting Comments
9011A RTD 1 TYPE Not connected
Pt 100 Ω
Ni 120 Ω
Ni 100 Ω
Pt 100 Ω RTD 1: Type
9012A RTD 1 LOCATION Oil
Ambient
Winding
Bearing
Other
Oil RTD 1: Location
9013 RTD 1 STAGE 1 -50 .. 250 °C; ∞ 100 °C RTD 1: Temperature Stage 1
Pickup
9014 RTD 1 STAGE 1 -58 .. 482 °F; ∞ 212 °F RTD 1: Temperature Stage 1
Pickup
9015 RTD 1 STAGE 2 -50 .. 250 °C; ∞ 120 °C RTD 1: Temperature Stage 2
Pickup
9016 RTD 1 STAGE 2 -58 .. 482 °F; ∞ 248 °F RTD 1: Temperature Stage 2
Pickup
9021A RTD 2 TYPE Not connected
Pt 100 Ω
Ni 120 Ω
Ni 100 Ω
Not connected RTD 2: Type
2.14.3
Functions
2.14 Temperature Detection via RTD Boxes
184 SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016
To Next Page
Loading...
Need help?
General
