Parker ac890 - Page 375

B-12 Sequencing Logic
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
Communications Status
The COMMS STATUS parameter (PREF 95.08) in the COMMS CONTROL function block monitors the
sequencing of the Drive. It is a 16-bit word based on standard fieldbus drive profiles. Some bits are not
implemented in the initial release and are set to 0 (see “Supported” column of the table below).
Bit
Name
Description
Supported
0 Ready To Switch On

1
Switched On
Ready for operation (refer control bit 0)

2 Operation Enabled (refer control bit 3)

3 Fault Tripped

4 (Not) Voltage Disabled OFF 2 Command pending

5 (Not) Quick Stop OFF 3 Command pending

6 Switch On Disable Switch On Inhibited

7
Warning
8
SP / PV in Range
9
Remote
= 1 if Drive will accept Command Word

10
Setpoint Reached
= 1 if not ramping

11
Internal Limit Active
= 1 if current limit active or speed loop is in torque
limit

12
13
14
15