TECNA
S.p.A.
ITEM
TE700 Instruction
Manual
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CHAPTER 12
- DESCRIPTION OF SIGNALS ON TERMINAL BOARD
PIN
NAME DESCRIPTION
1
3
VAC
This is the power supply of the control unit, which must be 24VAC. The power
supply transformer must be of at least 50VA and must power the control unit
only, to prevent any sources of interference.
2
GND
Ground connection.
Pay attention not to invert the wire with VAC
(1-3) as this could damage the control unit's fuses.
4
5
LOCK- / END-
LOCK+ / END+
This output is a polarized opto-electronic switch, Max 30VDC/10mA, and is
used to warn the operator when a cycle ends if END CYCLE is selected; when
in LOCK state, the control unit supplies a signal at output from the beginning of
the weld up to the hold.
6
7
WRONG -
WRONG +
This output is a polarized opto-electronic switch, Max 30VDC/10mA, and closes
if the set current limits are not met. The contact remains closed for the HOLD
and OFF time.
8
COM2
Common for outputs with 0V reference. Connected to GND conforming to
regulation EN60204.
9
COM2
Common for outputs with 0V reference. Connected to GND conforming to
regulation EN60204.
10
TRIGGER
Output for the command of the inverter unit.
11
COM1
Common for inputs with 24VDC reference.
12
READY_IN
Signal arriving from the inverter unit to highlight it is in perfect working order.
13
14
15
16
RIC4
RIC3
RIC2
RIC1
These inputs are used for directly calling welding programs from the outside. In
order to call the programs correctly, these inputs must be enabled before the
cycle-start signal. Inputs are active when closed towards the common COM1.
17
COM1
Common for inputs with 24VDC reference.
18
AUX2
This input allows an external device to stop the weld cycle during the squeeze
stage. It may be used as interlocking input or to connect safety devices such
as, for instance, flow meters or pressure switches. The contact connected to it
must be the normally open type and activates closed on COM1.
19
START2 NO
To be connected to the micro-switches of the cycle-start pedal. START2
determines the beginning of the work cycle of the second program selected
during the programming phase. This input is active closed on the common
COM1.
20
START2 NC /
RIC8
This input may be left unused or may be used either as a NC input for the
START 2 signal or as RIC8.
21
COM1
Common for inputs with 24VDC reference.
22
AUX
This input allows an external device to stop the welding cycle during the
squeeze phase. It may be used as an interlock input or to connect safety
devices such as flow meters or pressure switches. The contact connected to it
must be the NO type and is activated closed on the COM1.
23
START NO
To be connected to the micro-switches of the cycle-start pedal. START
determines the beginning of the work cycle. This input is active closed on the
common COM1.
24
START NC / RIC
7
This input may be left unused or may be used either as a NC input for the
START 1 signal or as RIC7.
25
BIC1 NO
This input may be connected to the cycle start manual buttons. The welding
cycle starts when BIC1 NO and BIC2 NO close at the same time or in
sequence within a max time of 0.5 seconds. This value was chosen in
conformity with international safety standards.
