Gantner Q Series Manual page 27

Q.series
Gantner Instruments Test & Measurement GmbH
Connecting the modules → Connecting the power supply
4
Pin assignment
Sync A
UART 2B
UART 2A
Sync B
Supply +10 to 30 V
Supply 0 V
UART 1B
UART 1A
Fig. 4-6 Assignment for the socket contacts (plan view).
IMPORTANT
When the modules are switched on, there is an increase current
demand until the modules are operating in a stable manner: In
the start-up phase up to 700 mA (10 ms) per module is needed
depending on the supply voltage. Thereafter, you should expect
approx. 500 mA per module for a 10 V supply voltage, with a 30 V
supply voltage approx. 170 mA. You should therefore either use
power supplies which can deliver the required peak power when
the voltage is switched on or—with many modules—switch the
modules on in several groups.
The modules have an internal self-healing (reversible) fuse for
protection against overvoltages, overcurrents and incorrect
polarity.
➡
Do not use cable which is too thin for the connection so that the
required power can be transferred to the module without signifi-
cant losses.
The cable diameter, which can be connected to the terminals, is
2
0.14 mm minimum and 1.5 mm
sleeves without plastic sleeves 0.25 mm
plastic sleeves between 0.25 mm
than 16 modules should be supplied through their sockets con-
nected together. With more modules another supply line is neces-
sary, for example via the Q.bloxx Extension Socket QES.
➡
The extension socket only supplies the module situated to the
right of it and the modules located to the left of it require a power
supply via the socket located on the far left.
DC
2
maximum or with wire-end
2
and 1.5 mm
2 2
and 0.5 mm . In total no more
2
and with
27