Weld334m - User’s manual
78
7 – Proportional Servovalve operating diagram
WELD GUN
VALVE
OFF
ON
START CYCLE
PROGRAM 1
(EV1=75%)
START CYCLE
PROGRAM 2
(EV1=25%)
EOCYCLE
PGM 1
EOCYCLE
PGM 2
Pressure %
100
75
50
25
0
xxxxxx
OFFEST = 20
EV1, of program 1
HOLD THE VALUE
VALUE
EV1, of program 2
HARDWARE RESET OR
CONTROL SWITCH-ON
t
Pressure % = Output air pressure, percentage of input pressure.
Examples: with: 5 bar input & EV1 @ 50 %; servovalve output = 2,5
" " " " " 75 % " " = 3,75
" " " " " 100 % " " = 5 bar (servovalve drop
not considered)
Servovalve parameters description:
OFFSET : 0 - 100 % ( active only after a reset; until a start cycle ) Stored in Setup function
EV1 : 0 - 100 % Nominal value during welding cycle Stored in each program
EV2 : 0 - 100 % Pressure variation value. Stored in each program
Change is done after n cycles; and in mode according the 5 available profiles
HOLD THE VALUE
t
When the weld program code change (at the physical discrete inputs, or by serial line fielbus as Interbus-S or
Profibus DP or DeviceNet) immediatly the servovalve command output will be upgrated according the EV1 value
stored in the program choosed. Also without the Start signals. This function is always active.
Pressure
%
0
100
xxxx
offset
HARDWARE RESET OR
CONTROL SWITCH ON
WELD PROGRM
CHANGE CODE
(i.e. # 1
)
WELD PROGRM
CHANGE CODE
(i.e. # 2
)
WELD PROGRM
CHANGE CODE
(i.e. # 3
)
t
All changes without start cycle command
Summary of Contents for Weld334m
Page 1: ...USER S MANUAL Weld334m HC HCM HIC HIM Ed 5 December 2004 Doc 39000326...
Page 6: ...Weld334m User s manual VI WHITE PAGE...
Page 14: ...Weld334m User s manual 8 WHITE PAGE...
Page 28: ...Weld334m User s manual 22 WHITE PAGE...
Page 30: ...Weld334m User s manual F351 BUS Interconnection card 24 WHITE PAGE...
Page 36: ...Weld334m User s manual F353 ADC Analogue Card 30 WHITE PAGE...
Page 40: ...Weld334m User s manual F364 SEV and F385 SEV Proportional Servovalve Modules 34 WHITE PAGE...
Page 42: ...Weld334m User s manual F359 MCP Memory Card and Printer 36 WHITE PAGE...
Page 54: ...Weld334m User s manual F356 IOE I O Expansion Card 48 WHITE PAGE...
Page 58: ...Weld334m User s manual F376 OPC Field Bus InterBus S Card 52 Card layout...
Page 61: ...Weld334m User s manual F386 Ethernet 100Base T and CANbus module 55 Card layout...
Page 62: ...Weld334m User s manual F386 Ethernet 100Base T and CANbus module 56 WHITE PAGE...
Page 64: ...Weld334m User s manual F383 COM RS422 Serial communication card 58 Card layout...
Page 73: ...Weld334m User s manual 67 APPENDIX...
Page 74: ...Weld334m User s manual 68...
Page 90: ...Weld334m User s manual 84 WHITE PAGE...
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