00195440-05-SG_D-Series_FSE-EN.pdf - 第165页
9 C&P Placement Heads 9.3.1 Z Axis Down 9.3 Travel Profile - Pickup Student Guide SIPLACE D-Series (FSE) 165 Benefit of standard mode for small components "early vacuum" The func tion change "early vac…
9 C&P Placement Heads
9.3 Travel Profile - Pickup 9.3.1 Z Axis Down
164 Student Guide SIPLACE D-Series (FSE)
▪ The positioning procedure for "upwards" is identical to that for standard pickup.
Benefits of special mode "contactless pickup"
The function option "contactless pickup" offers the following benefits:
▪ Prevents touching of component feeder unit and the possible resulting component shift/jump.
▪ Increases the pickup reliability for small COs, lightweight COs and exotic COs. The nozzle "hovers"
about 0.1 mm above the component surface. When the vacuum is switched on, the nozzles sucks
up the component from the tape pocket!
▪ No time loss during pickup (compared to standard pickup).
▪ The function is NOT limited to 0201 component shapes, certain nozzle types or feeder types.
9.3.1.3
9.3.1.3 Special Mode "Pickup with Minimum (Very Low) Force " for Z-Axis Down
Special Mode "Pickup with Minimum (Very Low) Force " for Z-Axis Down
Travel profile 21 and 22
These travel profiles are currently only for the Twin head (P&P module) and are only available with a
special nozzle.
Definable pickup forces: 0.9 - 2.0 N
9.3.1.4
9.3.1.4 Standard Mode for Smaller Components (<6x6mm²) Picked Up with Early Vacuum, Z-Axis Down
Standard Mode for Smaller Components (< 6x6 mm²) Picked Up with Early Vacuum, Z-Axis
Down
In this programming mode, early vacuum is also pro-
grammed, which is illustrated by the time between "end
signal downward" and "start upward".
Legend
1. Light barrier signal Z-axis LB top
2. Light barrier signal Z-axis LB bottom
3. Uncommutated motor current for Z-axis
4. End position signal for Z-axis
1. Section : Z-axis down (20 ms)
2. Section : Z-axis up (18 ms)
Special mode Z-axis down with "early vacuum" " vacuum
ON in top position"
Start gantry axes to pickup position of next feeder and
communication with changeover table:
▪ Start signal to gantry axes
▪ Signal for next feeder / this opens the feeder flap
End position signal for X/Y and star axes:
▪ End position signal for star axis
▪ Enables vacuum query: "segment airtight?" before
pickup
▪ X/Y end position signals available.
Z-axis starts:
▪ Positioning of Z-axis down
Light barrier (LB) up switches:
▪ Special procedure: valve positioning drive ON for
switching over to vacuum
▪ and releases LB down function
LB down switches:
▪ End position signal for positioning Z-axis down
9 C&P Placement Heads
9.3.1 Z Axis Down 9.3 Travel Profile - Pickup
Student Guide SIPLACE D-Series (FSE) 165
Benefit of standard mode for small components "early vacuum"
The function change "early vacuum" offers the following benefits:
▪ Increases the pickup reliability for small nozzle types 901/904. The vacuum begins to build up during
the downwards movement. This ensures, that when the upwards movement begins, an exotic com-
ponent and /or a heavy component will remain safely on the nozzle.
▪ No time loss during pickup (compared to standard pickup).
CAUTION
Cause of Hazard
The risk of head contamination is higher (without additional vacuum formation) when using noz-
zle types with large openings, generally for components larger than 6 mm!
NOTICE
Cause of Hazard
From SIPLACE PRO 3.0 onwards, early vacuum has been replaced by the component shape
library, for components smaller than 6x6 mm.
The time between "end position signal down" and "start
upwards" is shown below in the difference between the
"standard" and "early vacuum" modes.
▪ Standard vacuum 9.4 ms.
▪ Early vacuum 1.2 ms
Downwards positioning takes 3 ms longer for contactless
pickup.
Legend
1. End position signal for Y-axis
2. End position signal for star axis
3. Uncommutated motor currents for Z-axis (2 modes)
4. End position signal for pickup procedure with vacuum
switched on at bottom (standard)
5. End position signal for pickup procedure with early
vacuum
9 C&P Placement Heads
9.3 Travel Profile - Pickup 9.3.2 Z Axis Up
166 Student Guide SIPLACE D-Series (FSE)
9.3.2
9.3.2 Z Axis Up
Z Axis Up
9.3.2.1
9.3.2.1 Detailed Standard Pickup Procedure: Z-Axis Up
Detailed Standard Pickup Procedure: Z-Axis Up
9.3.2.2
9.3.2.2 Special Mode Pickup with "Reduced Speed" Z-axis Upwards
Special Mode Pickup with "Reduced Speed" Z-axis Upwards
If the reduced Z-axis speed is set to 98.1 % for the nozzle, the SR/MC 40X/501/502 SW will position as
follows in this special mode. From LRU/LRL 503 and SIPLACE Pro 1.4/2.0, this can be selected as "slow
start upward" in the component shape programming of stations with SW version SR/MC 503 or higher.
Detailed pickup procedure: Z-axis up
LB down switches:
▪ End position signal for Z-axis down and valve drive
"ON" for vacuum
▪ Both actions completed?
▪ Start signal for upwards movement
Z-axis starts:
▪ Positioning of Z-axis upwards
LB up switches:
▪ Reset the LB down signal
▪ 1. vacuum query "Component picked up?"
▪ (reply OK) start release for gantry axes
Communication with the changeover table:
▪ "Close feeder flap" and feeder lift
Z-axis end position signal (Z-axis at 0 position, DP station
swiveled out): 2. vacuum query "Component picked up?"
Start release for star axis
Detailed pickup procedure: Z-axis upwards with reduced
speed
LB down switches:
▪ End position signal for positioning Z-axis down; Both
actions completed? (switched to vacuum and end po-
sition signal Z-axis)
▪ Start signal for upwards movement
Z-axis starts:
▪ Positioning of Z-axis upwards
Special procedure: with low starting speed for the first
mm (takes approx. 20 ms longer), so that the vacuum
in the nozzle has time to develop completely (up to
502 / this is activated with 98% of normal accelera-
tion). After this, the speed depends on the selected
reduced value.
LB up:
▪ Reset the LB down signal
▪ 1. vacuum query "Component picked up?"
▪ Start signal for gantry axes
▪ Communication with the changeover table: all feed-
ers (in this special mode): "Close feeder flap" and
feeder lift
Z-axis end position signal (Z-axis at 0 position, DP station
swiveled out):
▪ 2. vacuum query "Component picked up?"
▪ Start signal for star axis