Toshiba GRZ100 B Series, Instruction Manual, Page: 218 / 447

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217
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6 F 2 S 0 8 4 6
PC
HUB.
UTP cable
(10Base-T)
100/110/115/120V
214B-13-10
Other
relays
Relay
Figure 4.4.2 Relay Setting and Monitoring System (2)
4.5 IEC 60870-5-103 Interface
The GRZ100 can support the IEC60870-5-103 communication protocol. This protocol is mainly
used when the relay communicates with a control system and is used to transfer the following
measurand, status data and general command from the relay to the control system.
•
Measurand data: current, voltage, active power, reactive power, frequency
•
Status data: events, fault indications, etc.
The IEC60870-5-103 function in the relay can be customized with the original software “IEC103
configurator”. It runs on a personal computer (PC) connected to the relay, and can help setting of
Time-tagged messages, General command, Metering, etc. For details of the setting method, refer
to “IEC103 configurator” manual. For the default setting of IEC60870-5-103, see Appendix N.
The protocol can be used through the RS485 port on the relay rear panel and can be also used
through the optional fibre optical interface. The relay connection is similar to Figure 4.4.1.
The relay supports two baud-rates 9.6kbps and 19.2kbps.
The data transfer from the relay can be blocked by the setting.
For the settings, see the Section 4.2.6.4.
4.6 Clock Function
The clock function (Calendar clock) is used for time-tagging for the following purposes:
•
Event records
•
Disturbance records
•
Fault records
•
Metering
•
Automatic supervision
•
Display of the system quantities on the digest screen
•
Display of the fault records on the digest screen
•
Display of the automatic monitoring results on the digest screen
The calendar clock can run locally or be synchronized with the external IRIG-B time standard
signal, RSM or IEC clock. This can be selected by setting.
If it is necessary to synchronise with the IRIG-B time standard signal, it is possible to transform
GMT to the local time by setting.
When the relays are connected to the RSM system as shown in Figure 4.4.1, the calendar clock of
each relay is synchronized with the RSM clock. If the RSM clock is synchronized with the
external time standard (GPS clock etc.), then all the relay clocks are synchronized with the
external time standard.