Emerson unidrive sp, User Manual

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SM-I/O PELV
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x.00
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308
Unidrive SP Advanced User Guide
www.controltechniques.com Issue Number: 10
Setting these parameters to On(1) causes the input sense to the destination parameter to be inverted or the output sense from the source to be
inverted.
When digital input 5 is used to provide a freeze function, the invert Pr x.15 will select whether the freeze is applied on the rising (Pr x.15 = Off) or the
falling edge (Pr x.15 = On) of the input signal.
This parameter is only available on drive software V01.10.00 and later.
With Pr x.16 = OFF
The PELV user power supply absent trip is intended to detect when the PELV user supply connected to the module is below 19V. During power-up the
PELV user supply may not be present until after the main drive supply. To avoid unwanted trips in this situation, the PELV user power supply present
trip detection system is disabled until the supply has become active the first time. Therefore if the supply is applied and then removed a trip is initiated.
The trip is also initiated at any time after drive power-up if the supply is not present and the drive becomes active (i.e. Pr
10.02 is one). This condition
prevents the drive from operating if the PELV user supply is not present. The status of the PELV user supply can be monitored from parameter Pr x.06
(Off (0) =inactive, On (1) =active).
With Pr x.16 = On
The state of the PELV user power supply will never trip the drive. The drive can be enabled without the PELV user power supply present but all of the
module IO will be inoperable. Digital and analog inputs will read zero. Digital outputs will be in their inactive state and analog outputs will be at 0mA.
Setting these parameters to On (1) causes the output sense from the source to be inverted.
The freeze input function is enabled for DI5 if the destination parameter for this input (Pr x.25 ) is set to Pr x.19 . Each time the input becomes active (or inactive
if the invert Pr x.15 is on) the freeze flag (Pr x.19 ) is set, the freeze system in the drive is triggered and held active.
Pr x.19 is updated within 500
μ
s of the change on the freeze input, and the freeze event is registered with the drive after 500
μ
s with a latency of 10
μ
s.
The freeze flag is not automatically cleared when DI5 reverts to its original state. Another freeze event cannot be registered by the drive until all freeze
flags are cleared. If any other I/O destination is set to write to Pr
x.19 , the parameter value simply follows the data from the I/O and no freeze events
are produced. If this parameter is set by the user, it will not cause a freeze event even if it is the destination for DI5.
A minimum of 500
μ
s must pass between consecutive freeze inputs. If a freeze input should occur less than 500
μ
s after the previous one, the second
will be ignored and have no effect on the drive.
x.11 T3 digital I/O 1 invert
x.12 T4 digital I/O 2 invert
x.13 T5 digital I/O 3 invert
x.14 T6 digital I/O 4 invert
x.15 T7 digital input 5 invert
RW Bit US
Ú
OFF (0) or On (1)
Ö
OFF (0)
Update rate: 4ms read
x.16 Disable PELV user power supply trip
RW Bit US
Ú
OFF (0) or On (1)
Ö
OFF (0)
Update rate: Background read
x.17 Relay 1 invert
x.18 Relay 2 invert
RW Bit US
Ú
OFF (0) or On (1)
Ö
OFF (0)
Update rate: 4ms read
x.19 Freeze flag
RW Bit
Ú OFF (0) or On (1) Ö
Update rate: See below
NOTE