Nordson Sure Coat - Calculating Lead and Lag Values; Spray Patterns

5
Calculating Lead and Lag Values
Value Description Positive or Negative Values
Lead Lead is the distance from the
spray guns to the leading
edge of the part. The lead
value can be positive or
negative.
Positive Lead: Setting the lead to a positive value turns on the
spray guns before the leading edge of the part reaches them.
Negative Lead: Setting the lead to a negative value turns on
the spray guns after the leading edge of the part reaches them.
Lag Lag is the distance from the
spray guns to the trailing
edge of the part. Lag values
can be positive or negative.
Positive Lag: Setting the lag to a positive value turns off the
spray guns after the trailing edge of the part passes them.
Negative Lag: Setting the lag to a negative value turns off the
spray guns before the trailing edge of the part passes them.
Spray Patterns
Spray Pattern Description
Restricted Both the lead and lag values are negative. The spray guns turn on after the leading
edge of the part passes them and turn off before the trailing edge passes them. This
pattern prevents or limits powder wrap around the edge of the part.
Extended Both the lead and lag values are positive. The spray guns turn on before the leading
edge of the part passes them and turn off after the trailing edge passes them. This
pattern allows powder to wrap around the edges of the part.
1400256A
Lead+
Part
Spray
Guns
Spray
Guns
Lead-
Leading
Edge
Lag-
Part
Spray
Guns
Spray
Guns
Lag+
Trailing
Edge
LEAD LAG
Lead-
Coated Area
Conveyor Direction
Lag-
Leading Edge
RESTRICTED PATTERN EXTENDED PATTERN
Lead +
Coated Area
Lag +
Leading Edge
Trailing Edge
Trailing Edge
Conveyor Direction
Conveyor DirectionConveyor Direction
Figure 3 Calculating Lead and Lag Values, Typical Spray Patterns