Siemens SIPART DR21, Manual

Page: 237 / 242

Manual
SIPART DR21
C73000-B7476-C143-07
237
CPU
Functional principle of the standard control-
ler, 26
self--diagnostics, 179
D
DDC fixed setpoint controller, 68
Control unit, 69
Design, 24
DI1 to DI2, Connection, 131
Digital inputs
Assignment and direction of effect, 50
Features, 21, 22
Functional principle of the standard control-
ler, 26
Linking with the control signals, 50
Technical Data, 37
Digital output signal processing (S57 to S75),
111
Digital outputs
Features
A1 to A4, 22
bLb, 21
bLPS, 21
bLS, 21
CB, 21
H, 22
He, 21
MUF, 22
N, 21
Nw, 22
P, 21
RB, 22
RC, 22
Si, 21
tS, 21
tSH, 21
w, 22
y, 22
yBL, 21
Functional principle of the standard control-
ler, 26
Technical Data, 38
Direction of control action, 181
of actuator, 181
of system, 181
Direction of effect
actuator, 182
system, 182
Direction--dependent blocking operation, 108
Display, software version, 151
Display levels, 73
Display technique, Technical Data, 39
DO1 to DO2, Connection, 132
dy -- amplitude of the step command, Preset-
ting, 186
E
Error messages, Adaptation, 162
Explanation of abbreviations, 229
external setpoint wE, 64
F
Factory setting, 178
Behavior of the controller, 150
Features, 19
Filter, Setting, 185
Fixed setpoint controller
DDC, 68
with 2 independent setpoints, 59
with one setpoint (control system coupling),
89
Front module
Design, 24
Replacing, 224
Function principle, 26
Functional description
Controller types, 55
Structure switches, 47
Functional explanation, of the digital message
signals, 111
Fundamental control technology terms, 9
Actuators, 9
Controller output signal, 12
Continuous controller, 13
Control loop, 9
control response, 10
Three--position step controller with internal
feedback, 12
Final control elements, 9
P controller, 10
PD controller, 11
PI controller, 11
PID controller, 11