Siemens Simovert P 6SE21 Series Operating Instructions Manual page 24

English
SIMOVERT P 6SE21 Series Inverters
Parameter Description
Number
P20 Serial interface selection
P21 Serial interface address
P22 Serial interface parity & baud rate
P23 Digital input response speed
P24 Fixed frequency mode selection
26
G85139–A1615–U156–A
02.95
Display
Setting Notes
(Default)
000 Local operation – monitoring only via serial interface.
001 Remote operation. Local controls disabled except for P20, which can be
selected and adjusted. If P20 is changed while the inverter is operating
then it will stop.
Note: The trip input remains active if P05 = 004, 005, 006 or 007.
002 USS Protocol (monitoring only)
003 USS Protocol (monitoring and control)
(000)
000 – Sets the address of the inverter when the serial interface is used.
030
(000)
Sets the parity and baud rate of the serial address:
Parity
000 Even
001 Even
002 Even
003 Odd
004 Odd
005 Odd
006 Ignored
007 Ignored
008 Ignored
Note: The master unit must still transmit a parity bit in each byte.
(000)
000 15 ms debounce of digital inputs (for relays or switches).
001 No debounce – suitable for transistor–controlled inputs in control
systems which require a fast response.
(000)
000 Normal operation – fixed frequency disabled.
001 Selects fixed frequencies. In this mode the inverter only outputs fixed
frequencies, ramping between the fixed frequencies at rates set by P02
and P03. The fixed frequencies are selected using and
X11.17 and X11.18) in accordance with the following table:
(1 = 7 – 33 V)
(0 = < 7 V)
002 Allows three fixed frequencies (P26, P27 & P28) and one analogue
setpoint in accordance with the following table:
Note: 002 is only valid if P04 is set to 000, 001, 002, 007, 008 or
009.
(000)
Operating Instructions
USS Only
Baud Rate (Even Parity)
2400 9600
4800 9600
9600 9600
2400 9600
4800 2400
9600 4800
2400 9600
4800 9600
9600 9600
(terminals
Freq Freq Freq
1 2 3
0 1 0
0 0 1
Analogue Freq Freq
Freq 2 3
0 0 1
0 1 0
Freq
4
1
1
Freq
4
1
1
Siemens plc 1995