Danfoss VLT Flow Drive FC 111 Design Manual page 110

VLT® Flow Drive FC 111
Design Guide
Conversion index
-5
8.4.13 Process Words (PCD)
The block of process words is divided into 2 blocks of 16 bits, which always occur in the defined sequence.
Table 58: Process Words (PCD)
PCD 1
Control telegram (master->follower control word)
Control telegram (follower->master) status word
8.5 Examples
8.5.1 Writing a Parameter Value
Change parameter 4-14 Motor Speed High Limit [Hz] to 100 Hz.
Write the data in EEPROM.
PKE = E19E hex - Write single word in parameter 4-14 Motor Speed High Limit [Hz]:
• IND = 0000 hex.
• PWE = 0000 hex.
HIGH
• PWE = 03E8 hex.
LOW
Data value 1000, corresponding to 100 Hz, see
The telegram looks like the following illustration.
E19E H 0000
PKE IND
Illustration 73: Telegram
Parameter 4-14 Motor Speed High Limit [Hz] is a single word, and the parameter command for write in EEPROM is E. Parameter 4-14
Motor Speed High Limit [Hz] is 19E in hexadecimal.
The response from the follower to the master is shown in the following illustration.
119E H 0000
PKE IND
Illustration 74: Response from Master
8.5.2 Reading a Parameter Value
Read the value in parameter 3-41 Ramp 1 Ramp Up Time.
PKE = 1155 hex - Read parameter value in parameter 3-41 Ramp 1 Ramp Up Time:
• IND = 0000 hex.
• PWE = 0000 hex.
HIGH
• PWE = 0000 hex.
LOW
110 | Danfoss A/S © 2021.04
8.4.12 Conversion.
H 0000 H 03E8
PWE high PWE
low
N O T I C E
H 0000 H 03E8
PWE high PWE
low
Conversion factor
0.00001
H
H
RS485 Installation and Set-up
PCD 2
Reference value
Present output frequency
AJ363928382091en-000101 / 130R0983