Menu 8
Parameter
structure
Keypad and
display
Parameter
x.00
Parameter
description format
Advanced parameter
descriptions
Macros
Serial comms
protocol
Electronic
nameplate
Performance RFC mode
162 Unidrive SP Advanced User Guide
www.controltechniques.com Issue Number: 10
5.10 Menu 8: Digital I/O
The drive has eight digital I/O terminals (T22, T24 to T29 and the relay) and an enable input. Each input has the same parameter structure. The digital
inputs are sampled every 4ms, except when inputs are routed to the limit switches Pr 6.35 and Pr 6.36 when the sample time is reduced to 250μs.
The digital input hardware (excluding the secure disable input) introduces a further 100us delay. The secure disable input hardware gives a typical
delay of 8ms (maximum 20ms). The digital outputs are updated every 4ms. Any changes to the source/destination parameters only become effective
after drive reset is activated.
I/O Sample rate Function
T24 to T26 4ms Digital input or output
T27 to T29 4ms Digital input
Relay Background
T22 Background 24V output