Knauer BlueShadow Detector 50D, Инструкция по эксплуатации

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26 Installation and initial startup
BlueShadow Detector 50D Instructions V7659
Signal Explanation
EV 2
(Event 2) TTL output
Relay state (open/closed) can be defined by the keypad
in stand-alone operation (e .g . as paramter of a program
step) or via an external software .
Levels:
ƒ
low (<0 .4 V)
ƒ
high (>2 .4 V)
Pulse:
ƒ
High for at least 1000 ms
Load resistance:
ƒ
>10 kΩ
EV 3
(Event 3)
TTL output
Relay state (open/closed) can be defined by the keypad
in stand-alone operation (e .g . as paramter of a program
step) or via an external software .
Levels:
ƒ
low (<0 .4 V)
ƒ
high (>2 .4 V)
Pulse:
ƒ
High for at least 1000 ms
Load resistance:
ƒ
>10 kΩ
Error IN TTL input
With a high level, running programs are terminated and
the message Error input activated appears .
Start IN TTL input
With a high level, a program is started in hold mode or
a link with the corresponding wait parameter is started .
Autozero Set absorbance values to zero .
GND Reference (ground) potential for the voltage level of
TTL signals .
+5V Provides a voltage of 5 V with respect to GND . This
makes it possible to supply a consumer switched with
event EV 1 (relay) . The +5V output is protected by a
62 mA fuse .
+24V Valve Event-controlled switching of 24 V against GND . The
output is protected by a 250 mA fuse . This output can
be used to operate a fraction valve .
External λ Allows external analog control of the detector wave-
length in single channel mode . . The control voltage
must be applied against AGND .