Installation
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany Tel.: +49 (0) 511 16 59 672-0 · www.akytec.de
12
12
Fig. 4.11 NPN transistor outputs
Q1…Q4
Fig. 4.12 NPN transistor outputs
Q5…Q8
4.5.3
Solid state relay (S)
Logic outputs are designed to control solid state relays with rating voltage
4…6 V DC and
current up to 50 mA.
Fig. 4.13 SSR outputs
Q1…Q4
Fig. 4.14 SSR outputs
Q5…Q8
4.5.4
Analog 4-20 mA (I)
An external voltage source for analog outputs is required. The voltage is calculated as
follows:
U
min
< U < U
max
U
min
= 10 V + 0.02 A x R
U
max
= U
min
+ 2.5 V
where
Umin, Umax
– minimum and maximum permissible voltage, V
R
– current-limiting resistor, ohm
If U > U
max
it is necessary to use the additional resistance R for current limitation. It is
calculated as follows:
R
min
< R < R
max
R
min
= (U
– U
max
) / I
max
R
max
= (U
– U
min
) / I
max
where
I
max
– maximum output current (20 mA).
► NOTICE
If an external voltage source is used, the voltage must not exceed 30 V.
Fig. 4.15 4-20 mA outputs
Q1…Q4
Fig. 4.16 4-20 mA outputs
Q5…Q8