Tweco 3000 Merlin - Manual (Page 43)

Manual 0-2532 4-11 OPERATION
Post-flow delay allows gases to flow after the main
cutting arc is interrupted. Post-flow is factory-set at
10 seconds, but can be reset to 5, 20, or 40 seconds.
Post-Flow Time
(Seconds)
SW4-1
Position
SW4-2
Position
5 0 (Off) 1 (On)
10 * 0 (Off) 0 (Off)
20 1 (On) 0 (Off)
40 1 (On) 1 (On)
* = Factory Setting
E. OK-To-Move Selection (SW5)
SW5
A-00995 Logic
PC Board
Figure 4-12 OK-To-Move Selection Switch SW5
Location
The OK-To-Move Selection Switch (SW5) selects ei-
ther contact closure or 24 VAC for the OK-To-Move
signal (motion start).
OK-To-Move Selection SW5
Contact Closure * UP
24 Vac DOWN
* = Factory Setting
To use the contact closure for the OK-To-Move sig-
nal the switch should be in the up position (factory
setting). To use 24 VAC for the OK-To-Move signal
the switch should be in the down position.
When starting off the edge of the workpiece, not a
pierce start, jumper TB2-8 to TB2-9 and TB2-7 to
TB2-10 to give an OK-To-Move contact closure when
the pilot starts via pilot sensing relay (PSR). The
switch must be in the contact closure (up) position or
the 24 VAC will be shorted out and blow the internal
fuse (f3).
24VAC
J2-19
J2-18
J15-11
J15-10
SW5
OK-To-Move
J2-16
J2-14
Logic PCB
OK-To-Move
At Pilot
Initiation
PSR
TB2-10
TB2-9
TB2-8
TB2-7
A-01009
Figure 4-13 OK-To-Move Using Internal Supply
An external voltage source up to 120V may be con-
nected in series with the Pilot Sensing Relay (PSR)
or OK-To-Move. This also works with the RC6010,
refer to RC6010 Manual for 24 VAC or external volt-
age. RC6010 must have only contact closure from
the Power Supply.
J15-11
J15-10
External Voltage
Source Alternate
Positions
OK
PSR
TB2-10
TB2-9
TB2-8
TB2-7
A-01010
Figure 4-14 OK-To-Move Using External Supply