IDEC SG4 Type 4 Finger & Hand - Manual (Page 62)

SG4-B Series Instruction Manual
58
Safety relay
The drawing shows the connection between the safety light curtain and
the Type 4 safety relay of the SE-SR2 series functioning in the
automatic Start mode (left side) and manual Start with monitoring (right
side).
MODEL DESCRIPTION
SE-SR2 Type 4 safety relay - 3 NO 1NC