Gateway Initialization; Time Synchronization - ABB SPA-ZC 302 Installation And Commissioning Manual

1MRS755014
4.5.
4.6.
Profibus-DPV1/SPA Gateway
Installation and Commissioning Manual

Gateway initialization

When the gateway is set into application mode from the configuration mode by
using the DIP switch, see Section 3.3.3.3. DIP switch configuration, the gateway
starts to go through the configuration one parameter at a time to verify that the
source parameter is available in the protection relay. If a parameter does not answer
on the data request from the gateway, the In Use flag will be reset, see Section 4.6.

Time synchronization.

The gateway polls only the parameters that have the In Use flag set. In the profibus
side, parameters which cannot be read from the SPA device report the value 0xFF,
0xFFFF or 0xFFFFFFFF according to the size of the data, except for the values that
are updated by events that have the value 0x0F.
The state of the In Use flags is stored into the non-volatile memory. This means that
supply power interruption will not affect the configuration and the gateway will start
up normally.
The process data is valid when the gateway mode bit indicates application mode and
SPA initializing is zero. There is a separate data-valid bit for each slave. Bit 3 must
be zero (SPA On-line). If bit 5 indicates a configuration warning, some of the data
is invalid (unavailable). The unavailable items are reported with 0xF in the Profibus
message. For the valid process data, the SPA device status (IRF) information should
indicate no errors. The initial states of the digital inputs are polled from the SPA
slave. After this, if declared, events are used to update the inputs.
The SPA event mask has to be open for these signals. Only one SPA
master can read events from the SPA slave at a time.
Time synchronization
To enable the Time synchronization feature of the gateway, a
Profibus-DPV1 master that is capable of writing acyclic messages to
specific slots must be used. It is important that the protection relay
does not receive time synchronization signals from more than one
source.
The time synchronization feature of the gateway requires that the internal clock of
the gateway is set. The gateway time is then used to synchronize the protection relay.
Set the gateway clock by writing the date to slot 0 of the acyclic output and the time
to slot 1 according to Table 4.6.-1.
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