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05.05
Switch over master/slave drive:
Set I component (selection of control signal via parameter P695):
Stop I component (selection of control signal via parameter P696):
Limitation active:
Switch over to P controller:
D component in actual value channel or setpoint/actual value deviation channel
As a basis for selecting the correct derivative action time, it is necessary to calculate the maximum
possible rate of rise at the derivative action element input, i.e. the period of time required by the input
signal to change from 0 to 100% at this maximum rate of rise. The derivative action time should
preferably be set to a shorter value than this period.
9.13
Serial interfaces
The SIMOREG 6RA70 converter is equipped with the following serial interfaces:
− G-SST1 (serial interface 1)
Connector X300 on board A7005 (operator panel)
®
USS
protocol
provided for the purpose of connection the OP1S operator panel
− G-SST2 (serial interface 2)
Terminal strip X172 (terminals 56 to 60) on board A7001
®
USS
and peer-to-peer protocol, parameterizable
Additionally if board A7006 (terminal expansion) is installed:
− G-SST3 (serial interface 3)
Terminal strip X162 (terminals 61 to 65)
®
USS
and peer-to-peer protocol, parameterizable
Interface hardware
The hardware of G-SST1 is designed to operate in RS232 and RS485 standard / two-wire mode, and
G-SST2 and G-SST3 in RS485 standard / two and four-wire mode. For connectors and terminal
assignments, see Section 8, Sheets G170 to G174.
The maximum cable length for a peer-to-peer connection from the transmitter to the last receiver
connected to the same transmission output is 1000 m. The same maximum cable length applies to the
bus cable of a USS connection. The maximum cable length is only 500 m for both types of connection
if a baud rate of 187500 bd is selected.
SIEMENS AG
6RX1700-0AD76
SIMOREG DC Master
Operating Instructions
0 = Master drive
1 = Slave drive
When "Slave drive" is selected, the I component of the speed controller is
made to "track" such that M(set,n contr.) = M(set,limit.), the speed setpoint is set to equal
the actual speed (K0179) (enable tracking with P229).
When 0 ⇒ 1 signal transition of selected binector, the I component is set to the setting
value (selected in parameter P631)
0 = I component enabled
1 = Stop I component
This signal is in the log. "1" state when the upper or lower torque limitation is violated, the
speed limiting controller is active, the current limitation is active or when the firing angle
for the armature circuit reaches the α
In this case, the I component of the speed controller is stopped.
The P controller function is activated (I component = 0) when the speed drops to below
the changeover value.
-limit.
G
Function descriptions
9-23
- Quick Links:
- Faults and Alarms
- Fault Messages
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