Siemens SINAMICS G120P Function Manual

Communication via AS-i - only for G110M
7.3 Dual Slave mode
Fieldbuses
Function Manual, 04/2018, FW V4.7 SP10, A5E34229197B AE
221
7.3
Dual Slave mode
In Dual Slave mode, eight bits are available for the communication between the AS-i master
and the inverter. The eight bits are used to transfer process data. In parallel, the control can
start a diagnostic request via AS-i.P0.
The following default settings are possible:
● Default setting 31: Dual Slave mode with fixed setpoints
● Default setting 34: Dual Slave mode with setpoint via AS-i field bus
Default setting 31: Dual Slave mode with fixed setpoints
The control accesses the two slaves of the inverter each via four bits.
Via slave 2, in accordance with profile 7.A.E, the control specifies the speed setpoint via the
motor control bits (AS-i.DO0 … AS-i.DO2).
Via slave 1, the control sends data in cyclical or acyclical mode, in accordance with profile
7.A.5.
The control requires one bit per slave in order to specify the slave.
Default setting 31, slave 2 with profile 7.A.E: Control -> inverter
•
AS-i.DO0
-
>
p1020.0 = 2093.0
Fixed speed bit 0
•
AS-i.DO1
-
>
p1021.0 = 2093.1
Fixed speed bit 1
•
AS-i.DO2
-
>
p1022.0 = 2093.2
Fixed speed bit 2
•
AS-i.DO3
-
>
Select slave A or slave B, interconnected internally
Table 7-4 Fixed speeds via the motor control bits and response in the inverter
(Page 225).
If the control specifies the speed setpoint, the inverter replies:
Default setting 31, slave 2 with profile 7.A.E: Inverter -> control
•
p2080[0] = 53.13
PLC ready to
switch on
-
>
AS
-i.DI0
•
p2080[1] = 899.11
Pulses enabled
-
>
AS
-i.DI1
•
p2080[2] = 722.0
State DI0
-
>
AS
-i.DI2
•
p2080[3] = 722.1
State DI1
-
>
AS
-i.DI3
If the control sends a diagnostic request via AS-i.P0, the inverter replies with the currently
pending fault or alarm messages.
Table 7-5 Alarm and fault messages via RP0 … RP3 from the inverter to the AS-i
master (Page 225).

Siemens SINAMICS G120P Specifications

General

Frequency Range	0 Hz to 550 Hz
Ambient Temperature	-10°C to +50°C
Storage Temperature	-40°C to +70°C
Relative Humidity	5% to 95% (non-condensing)
Voltage Range	200 V to 240 V, 380 V to 480 V, 500 V to 690 V
Output Voltage	0V to input voltage
Control Type	Vector control, V/f control
Protection Class	IP20, IP55
Communication Interfaces	PROFIBUS, PROFINET, Modbus RTU
Cooling Method	Air cooling
Altitude	Up to 2000 m without derating
Power Range	0.37 to 630 kW