Rockwell Automation 20-COMM-H RS485 HVAC Adapter FRN 2.xxx - Manual (Page 62)

6-6 Using Siemens Building Technologies P1 FLN
20-COMM-H RS-485 HVAC Adapter User Manual
Publication 20COMM-UM009D-EN-P
engineering value. For example, in PowerFlex 70/700 drives, the Reference
is scaled based on the value of Parameter 55 - [Maximum Freq], but the
commanded maximum speed can never exceed the value of Parameter 82 -
[Maximum Speed].
Table 6.C shows example References and their results
on a PowerFlex 70/700 drive that has its Parameters 55 - [Maximum
Freq] set to 130 Hz and 82 - [Maximum Speed] set to 60 Hz.
Table 6.D shows the commands that you can execute on a PowerFlex 70/
700 drive and the point(s) that you can use to execute them.
Table 6.C Example Speed Reference and Feedback for a PowerFlex 70/700
Reference
Value Scale
Output Speed
Feedback
Value
Percent Value
32767 100% 130 Hz 60 Hz (1)
(1) The drive runs at 60 Hz instead of 130 Hz because Parameter 82 - [Maximum Speed]
sets 60 Hz as the maximum speed.
15123 (2)
(2)
The Feedback value is also scaled based on the value of Parameter 55 - [Maximum
Freq]. For example, 60/130 = 0.46 so 32767 x 0.46 = 15123.
16384 50% 65 Hz 60 Hz
(1)
15123
8192 25% 32.5 Hz 32.5 Hz 8192
0 0% 0 Hz 0 Hz 0
Table 6.D Logic Commands
Point
Number(s) Point Logic
Command Bit
PowerFlex 70/700 Example
Descriptio
n
Values
24 CMD RUN.STOP 0 Stop (1) 0 = Not Stop
1 = Stop
(3)
26 RUN ENABLE
89 LOGIC CMD LO bit 0
24 CMD RUN.STOP 1 Start
(1) (2)
0 = Not Start
1 = Start
89 LOGIC CMD LO bit 0
89 LOGIC CMD LO bit 2 2 Jog 0 = Not Jog
1 = Jog
94 RESET FAULTS 3 Clear
Faults
(2)
0 = Not Clear Faults
1 = Clear Faults
89 LOGIC CMD LO bit 3
22 CMD FWD.REV 4 and 5 Direction Bits
89 LOGIC CMD LO
bits 4, 5 05 04
0
0 = No Command
0 1 = Forward Command
1 0 = Reverse Command
1 1 = Hold Direction Control
89 LOGIC CMD LO bit 6 6 Local
Control 0 = No Local Control
1 = Local Control
89 LOGIC CMD LO bit 7 7 MOP
Increment 0 = Not Increment
1 = Increment
90 LOGIC CMD HI
bits 0, 1 8 and 9 Accel Rate LOGIC CMD HI Bits
01 00
0
0 = No Command
0 1 = Accel Rate 1
1 0 = Accel Rate 2
1 1 = Hold Accel Rate
90 LOGIC CMD HI
bits 3, 2 10 and 11 Decel Rate LOGIC CMD HI Bits
03 02
0
0 = No Command
0 1 = Decel Rate 1
1 0 = Decel Rate 2
1 1 = Hold Decel Rate