Multiprotocol Ethernet Interface User's Manual

66
ICC
Output Instances 20 and 21 Detail
Instance Byte
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
0
Fault
Reset
Run
Fwd
1
2 Speed Reference (Low Byte)
20
3 Speed Reference (High Byte)
0 NetRef NetCtrl
Fault
Reset
Run
Rev
Run
Fwd
1
2 Speed Reference (Low Byte)
21
3 Speed Reference (High Byte)
Mapping Detail
Run Fwd: forward rotation command (0=forward rotation off, 1=forward rotation
on). Maps to inverter register 1007, bits 9 and 10. Run Fwd = 1 translates to
inverter register 1007 bit 9 (direction) = 0 and bit 10 (run/stop) = 1. Note that if
both the “Run Fwd” and “Run Rev” bits are on, then inverter register 1007 will
not be changed from its previous value.
Run Rev
: reverse rotation command (0=reverse rotation off, 1=reverse rotation
on). Maps to inverter register 1007, bits 9 and 10. Run Rev = 1 translates to
inverter register 1007 bit 9 (direction) = 1 and bit 10 (run/stop) = 1. Note that if
both the “Run Fwd” and “Run Rev” bits are on, then inverter register 1007 will
not be changed from its previous value.
Fault Reset
: Inverter reset command (0=no action, 0→1 rising edge=reset).
Maps to inverter register 1007, bit 13 (fault reset).
NetCtrl
: Run/stop control source selection (0=local control, 1=network control).
Maps to inverter register 1007, bit 15 (command priority).
NetRef
: Speed reference source selection (0=local control, 1=network control).
Maps to inverter register 1007, bit 14 (frequency priority).
Speed Reference
: Inverter speed reference in RPM. Maps to inverter register
1008 (frequency command). Because the inverter always requires a frequency
command value in units of Hz, the interface card applies an RPM-to-Hz
conversion equation. The general RPM-to-Hz conversion equation is [RPM x
number of motor poles / 120]. However, for simplicity the interface card always
assumes that a 4-pole motor is in use, thereby reducing the applied conversion
equation to [frequency command value = RPM / 30].