Fema Electronica K40-CR, User Manual

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FEMA ELECTRÓNICA . Series K . K40-CR
5
1.6 Control connections
Vexc.
1 2 3 4 5
Stop
Reset
0 V
Start
• Normal connections (‘con.a’) - controls for ‘start’, ‘stop’ and ‘re -
set’ are independent. Activation by default is by falling edge (by
short-circuit to the 0 Vdc terminal). Internal pull-up resistors are
activated. This is the normal working mode.
To work with other control signals or activations, configure the in
-
ternal pull-up / pull-down resistors, the trigger level and the activa -
tion by rising or falling edge
(see section 1.12.3)
.
Vexc.
1 2 3 4 5
function ‘B’
Reset
0 V
Start / Stop
• Alternative connections (‘con.b’) - the ‘start’ and ‘stop’ controls
share the same terminal ‘1’. Terminal ‘1’ at high level activates the
‘start’. Terminal ‘1’ at low level activates the ‘stop’. The ‘reset’ con -
trol is independent at terminal 5. Terminal ‘3’ is now dedicated to
activate signal ‘B’. See section
1.12.2
for more information on func -
tions associated to the activation of the ‘B’ signal. Activating on
the configuration menu a ‘B’ function, automatically activates the
‘alternative connections’ mode.
The reset function can be activated from three independent and con -
figurable sources:
• Front reset - associated to the front button ‘LE’ (
3
). This reset can
be disabled by menu (see section 1.12.7) . The front reset is activated
by levels (pressed / not pressed).
• Rear reset - connected to pin 5 at the rear terminal. It activates
by default on falling edge, by connection to the 0 Vdc terminal. Ac -
tivation is configurable
(see section 1.12.2)
by edge (falling or rising)
or level (up or down). Trigger level is configurable between 0 and
3.9 Vdc. Internal configurable pull-up / pull-down resistors allow to
use other type of sensors (NPN, PNP, push-pull, inductives, TTL, ...).
• Alarm reset - alarms 1, 2 and 3 can be configured to activate a
certain function (a reset for example) when alarm activates (see sec -
tion 1.12.4) . This configuration creates infinite loops which can be
counted by using function ‘B.2 cycles’ (see section 1.12.2) .
1.7 Types of reset
Reading
Minutes
Setpoint 1
Chronometer with ‘reset’ activation when read -
ing reaches setpoint 1 (‘15.00’ minutos)
Minutes
Cycle counter
0
1
2
15.00
0.00
15.00 30.00 45.00