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Key
Parameters Function Range Pre.setting Description
HVP -20 Parameters List for DA-251 (MAC. 35)
Parameters
Code
ON : No foot lifting at heeling pedal.
OFF : Has foot lifting at heeling pedal.
ON : No function at heeling pedal. ( foot lifter and need up function are also invalid)
OFF : Trimmer is functioned at heeling pedal.
When the pedal is returned to neutral position, trimming works automatically.
O N : Enable. Only valid when 【072.FHC】= OFF
OFF：Disable.
Foot lifter output signal converted.
ON : The foot lifter goes up during sewing.
OFF: Function invalid.
Trimming device protection for Cover-Stitch machine.
NC：Normal close. When signal at open , motor immediately stops and rotation symbol will stop.
NO：Normal open. When signal at close , motor immediately stops and rotation symbol will stop.
With TCL trigger signal input, the next trimming will be cancelled as full heeling the pedal.
ON：Valid.
OFF：Invalid.
Canceling the interlock timer for quick restarting. For machine without trimmer device only.
ON：Valid.
OFF：Invalid.
Motor running mode at trimming sequence selection.
LK：For general Lock-Stitch machines .Trimming from needle down to up.
RK：For Chain-Stitch machine easy pull out cycle. Needle stops with a reverse angle set by 【116.DRU】.
KA：For general Cover-Stitch machines with under trimmer only.
KB：For special Cover-Stitch machines with upper trimmer .
KC：Valid only when 【079. LTM】=TK and 【081. TS】＞0, otherwise function same as LK mode.
Reference the timing chart.
T1：At down position delayed 【081. TS】 angles on, at up position delayed 【083. T2】 time off.
T2：At down position delayed 【081. TS】 angles on, extended 【084. TE】 angles off.
T3：At down position delayed 【081. TS】 angles on, extended 【083. T2】time off.
T4：At down position delayed 【082. T1】 time on, extended 【083. T2】 time off.
TK：At up position delayed 【082. T1】 time on, extended 【083. T2】 time off.
TS：At down position always on, at up position delayed 【082. T1】 time on, extended 【083. T2】 time.
T7：At down position delayed 【081. TS】angles on, at up position off, and delayed 【082. T1】time on,
extended【083. T2】time off.
Reference the timing chart.
L1：At down position delayed 【085. LS】 angles on, at up position delayed 【087. L2】time off.
L2：At down position delayed 【085. LS】angles on, extended 【088. LE】angles off.
L3：At down position delayed 【085. LS】 angles on, extended 【087. L2】time off.
L4：At down position delayed 【086. L1】 time on, extended 【087. L2】 time off.
LK：At up position delayed 【086. L1】 time on, extended 【087. L2】 time off.
LS：At down position always on, at up position delayed 【086. L1】 time on, extended 【087. L2】 time off.
L7：At down position delayed 【085. LS】 angles on, at up position off, and delayed 【086. L1】 time on,
extended【087. L2】 time off.
81
TS Delayed angles prior to trimmer engaged 0 - 360 degrees 0
Valid for【079. LTM】= T1/T2/T3/T7 .
82 T1 Delayed timing prior to trimmer engaged 0 - 990 ms 0
Valid for【079. LTM】= T4/TK/TS/T7.
83 T2 Trimming time 0 - 990 ms 20
Valid for【079. LTM】= T1/T3/T4/TK/TS/T7.
84 TE Setting angles of trimming 0 - 360 degrees 0
Valid for【079. LTM】 = T2 .
85 LS Delayed angles prior to tension release engaged 0 - 360 degrees 0
Valid for 【080. LLM】 = L1/L2/L3/L7 .
86 L1 Delayed timing prior to tension release engaged 0 - 990 ms 0
Valid for【080. LLM】= L4/LK/LS/L7.
87 L2 Timing of tension release 0 - 1500 ms 30
Valid for【080. LLM】 = L1/L3/L4/LK/LS/L7.
88 LE Setting angles of tension release 0 - 360 degrees 0
Valid for【080. LLM】= L2 .
P
O
W
E
R
..
O
N
OFFON/OFFTrimming works at neutral pedal
ON/OFF OFF
OFFCancel trimming at full-heeling pedal ON/OFF
Cancel foot lifting at full- heeling pedal
OFF
75 SFM Safety switch protection mode NC/NO NO
Converter for foot lifter signal output74 FRV ON/OFF
OFF
77 ILC Cancel of interlock timing after full heeling pedal ON/OFF OFF
76 TCL Thread trimmer cancel ON/OFF
L1/L2/L3/L4/LK/LS/L7
LK
79 LTM
Mode selection for trimming sequence.
( For TM output signal )
T1/T2/T3/T4/TK/TS/T7 TS
LK/RK/KA/KB/KC
LS
78 TRM Motor running mode at trimming sequence
72 FHC
71 FL
73 NTC
80 LLM
Mode selection for tension-release sequence.
For ML output signal
＋
From the library of: Diamond Needle Corp
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