The Northern Irishman was sent to the stand shortly after Carl McHugh was sent off by referee Craig Thomson, after appearing to become embroiled in a dispute with members of the Rangers coaching staff.

Robinson admitted a misconduct charge and "criticising a match official in such a way as to indicate bias or incompetence" or "impinge on his character".

Speaking immediately after the game, Robinson criticised the handling of the situation by fourth official Craig Napier.

"Listen, members of their staff came up to voice their opinion," Robinson said. "I was the only one sent to the stand.

"A young boy, out of his depth as a fourth official, obviously can't deal with that. I don't think it was a major incident."

Robinson served a one-game ban last season after being sent to the stand at Hampden following an argument with then Rangers boss Pedro Caixinha.

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