Download PowerFlex 700S Reference Manual - Mid

2-134
Detailed Drive Operation
To control from a communication network (20-COMM module):
1. Turn on bit 1 "Start" in the logic command word to run.
2. Toggle bit 8 "CurrLimStop" in the logic command word on and then off to
perform a current limit stop. Bit 1 "Start" in the logic command word must
be turned off and back on to run again (therefore, technically, there is no
2-Wire control with a coast stop on a network because two bits must be
controlled).
Note:
In 2 wire mode (parameter 153 [Control Options] bit 8
"3WireControl" = 0), the HIM Start button is not functional.
Start-Up
Refer to Autotune - Start-Up Menu on page 2-4 for Start-Up information.
Stop Modes
Refer to Start/Stop Modes on page 2-131.
SynchLink™
This section contains information specific to PowerFlex® 700S SynchLink™
parameters and gives an example of setting up the PowerFlex 700S SynchLink
using DriveExecutive™. Please refer to the SynchLink System Design Guide,
publication 1756-TD008, for PowerFlex 700S SynchLink topologies, hardware and
wiring details.
SynchLink Configuration
Parameter 904 [SL Node Cnfg] contains the following four bits:
• Bit 0- “Time Keeper” - This bit is turned on in the SynchLink master. Only one
node in a SynchLink network can be the time keeper.
• Bit 1 - “Reserved” - Not used.
• Bit 2- “Synch Now” - This bit is turned on and all other bits off in the
SynchLink Followers.
• Bit 3 - "Reset SL" - This bit can be turned on to reset SynchLink after a
SynchLink configuration change instead of cycling power on the drive.
SynchLink data is transmitted as a combination of direct and buffered data.
Parameters 905 [SL Rx CommFormat] and 910 [SL Tx CommFormat] set the
format for the receive and transmit data. The following tables show the different
formats for transmit and receive data and the respective SynchLink fiber update
rates for the direct and buffered data.
Table 2.T Receive Data
Parameter 905
# of Direct Words Direct Word Update # of Buffered Words Buffered Word Update
[SL Rx CommFormat]
7
2
50 µSec
18
0.5 ms
9
4
50 µSec
8
0.5 ms
17
4
50 µSec
18
1 ms
Note: Selections 6 and 16 for parameter 905 [SL RX CommFormat] are not shown
in the table above and are not functional at the time of publication.