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Operating Instructions – MOVITRAC® B
5
Communication and unit profile
Startup
5.11.4 Sequence control
Definition of the
control word
The control word is 16 bits wide. Each bit has been assigned a frequency inverter func-
tion. The low byte consists of 8 fixed function bits that are always valid. The assignment
of the more significant control bits varies for the different control words.
Functions that are generally not supported by the frequency inverter cannot be activated
by the control word. The individual control word bits are considered as reserved and
must be set to logical 0 by the user.
Basic control block
The less-significant part of the control word (bits 0 to 7) contains 8 fixed function bits for
the most important drive functions. The following overview shows the assignment of the
basic control block.
Bit
Function
0
Controller inhibit = "1" / enable = "0"
1
Enable = "1" / rapid stop = "0"
2
Enable = "1" / stop = "0"
3
Reserved
4
Ramp generator selection: Integrator 1 = "1" / integrator 2 = "0"
5
Parameter set switchover: Parameter set 2 = "1" / parameter set 1 = "0"
6
Reset: reset pending fault = "1" / not active = "0"
7
Reserved
8
Depends on control word
9
10
11
12
13
14
15
00
I
Summary of Contents for Movitrac B
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