Wieland SNS 4074K Instrucciones De Uso página 7

Connections and indicators (see also the section "Terminal Diagram")
Terminal Function
A1 Operating voltage connection U
A2 Operating voltage connection Ground
X1, X2 Semiconductor signal outputs for indicating and
evaluating operating and error statuses
S1 Input for function selection (operating mode)
S2 Input for function selection (operating mode)
I1 – I4 Inputs for sensor transmitter or
I2 – I4 Input for function selection (operating mode)
I5 Input for RESET function
I6 Input for enable/start delay
Q1 / Q2 Outputs (semiconductors), safety related
Q3 / Q4 Inverted outputs (semiconductors), safety related
Settings of the standstill monitor (diagram)
Information on the outputs
The outputs Q1/Q2 can be used up to SIL 3.
The outputs Q3/Q4 can be used for controlling magnetically
operated interlocks up to SIL 1.
Setting of the speed to be monitored
The standstill frequency is set using the two rotary switches
"x" and "y".
Device Variants Rotary switch
0.1–9.9 Hz 00 / 01– 99
0.5–99 Hz 00 / 01– 99
"ENTER" button: Activation of the function block and
control circuit functions
 Set the required operating mode, speed (at the rotary
switches) and the control circuit function (using external
wiring at S1, S2, I5).
 Then apply the operating voltage with the ENTER button
pressed; the ERR indicator flashes (max. 3 s).
 Release the ENTER button while the ERR indicator is flash-
ing (an error is detected if the ENTER button is pressed for
longer than 3 s).
The selected operating mode, speed and RESET function are
then saved and active.
Doc. # BA000624 – 04/2012 (Rev. D)
B
SNS 4074K
Freq. [Hz]
0.1 / 0.1–9.9
0,5 / 01–99
LED Meaning, if LED lights
PWR U is present
B
S1 High signal is present
S2 High signal is present
I1 – I4 High signal is present
I5 High signal is present
I6 High signal is present
Q1 / Q2 High signal is present
Q3 / Q4 High signal is present
ERR Error (see manual BA000506)
X1, X2 are not safe semiconductor outputs.
X1 signals error states.
X2 signals the logic state of A and the RESET request by
I5.
RESET / BYPASS function I5/I6 (SNS 4074K)
The automatic(high)/manual (low) Reset function is defined
during the activation of the POU, see ENTER button.
automatic RESET: A High signal at I5 (open) transmits the
comparator signal to the outputs.
manual RESET:A High pulse at I5 transmits the enable of the
comparator to the outputs.
The transfer of the Reset signals can be influenced using the
Bypass function (ODER) at the input I6 of the SNS 4074K, If
the input I6 is wired (HIGH), the outputs Q1 and Q2 are
permanently HIGH and Q3 and Q4 permanently LOW. The
generation of the bypass signal has to fulfill the same safety
requirements as the operating mode and the designated safety
function.
RESET / Start-up bridging I5/I6 (SNS 4084K)
The automatic(high)/manual (low) Reset function is defined
during the activation of the POU, see ENTER button.
automatic RESET: A High signal at I5 (open) transmits the
comparator signal to the outputs. This transfer can be disabled
with I6 (I6 = LOW)
SNS 4074K/4084K
SNS 4084K
EN 7