Moeller DF51 - System overview

10/05 AWB8230-1541GB
Contents
3
Monitoring functions 112
– Limiting motor current 112
– Suppressing overcurrent stopping 113
– Overload signal (OL) 114
– Thermal overload 115
– Thermistor (PTC) 116
– Supply voltage (POWER) 117
– Fault messages 119
– Fault register 120
– Fault signal (AL) 121
– External fault signal (EXT) 121
– Resetting fault signals (RST) 122
– Automatic restart after a fault 123
– Unattended start protection 124
Braking 125
– DC braking (DCB) 125
Mathematical and logic functions 127
– Mathematical functions 127
– Frequency offset (ADD) 128
– Logic functions 129
PID control 131
– Configuring PID control 134
– Activating and deactivating PID control (PID) 136
– PID system deviation (OD) 136
– Application examples 137
– Feedback value check signal (FBV) 139
System settings 140
– STOP key 140
– Type of motor stop 140
– Deceleration ramp, interrupting 141
– Pulse frequency (PNU b083) 141
– Reduced response time (RDY) 142
– Parameter access inhibit (SFT) 143
– Parameter inhibit (PNU b031) 143
– Initialization (restoring default settings) 144
– Debug mode (PNU C091) 145
6 Serial interface (Modbus) 147
General information about Modbus 147
The RS 485 port 147
Communications in a Modbus network 147
Connecting to a Modbus network 148
Parameter settings for Modbus 149
Setting the OPE/485 DIP switch 150
Displayed value (selection with PNU b089) 151
The network protocol 151
– Transmission 151
– Function names and numbers 152
Modbus register 161
Holding register (word variable) 163
7 Troubleshooting 185