Pentair HD 04 Originalbetriebsanleitung Seite 40

MODULE SAFETY BARRIER ± 24V
TECHNICAL DATA
• Input voltage: max. ±24 V
• Current: max. 50 mA
• Internal fuse: 50 mA semi-delay
• Volume resistivity: 360 ±7.5 Ω
• Connection terminals: 2.5 mm²
• PEQ connection terminals: 4.0 mm²
• Temperature range: -20°C to +50°C
• Humidity: 0 to 90 % RH, with no condensation
Intrinsic safety data
• Ex-zone approval: II (2) G [Ex ia Ga] IIC/IIB
• Um: 253 V~
TN 40140
• Uo: 30,5 V, Io: 90 mA,
• Max. permissible external inductance, capacitance:
• Lo for IIC/IIB : 43 µH / 200 µH
• Co for IIC/IIB : 63 nF / 510 nF
JP46797
• Uo: 27,5 V, Io: 81 mA Po: 556 mW
• Max. permissible external inductance, capacitance:
• Lo for IIC/IIB : 50 µH / 100 µH
• Co for IIC/IIB : 86 nF / 672 nF
DESCRIPTION
The safety barrier separates intrinsically safe circuits from
circuits that are not intrinsically safe. As an item of so-called
accessory operating equipment the barrier itself must be in-
stalled outside the potentially explosive zone.
INSTALLATION
WARNING!
Before carrying out any works: disconnect the pump and the
controls from the mains and take steps to ensure that it can-
not be emergized again.
NOTICE! The installation and electrical connection of the safe-
ty barrier may be carried out only by an experienced, qualified
electrician with a precise understanding of the explosion pro-
tection standards (EN 60079, Part 14) and in complete compli-
ance with these standards.
The safety barrier may only be installed and operated outside
the potentially explosive area and above the back-flow level.
The safety barrier must be installed in a housing unit (with a
minimum protection category of IP 20). The device must be
kept in a clean, dry and well monitored environment.
The distance between the intrinsically safe terminals of the
safety barrier and the active parts of any other electrical cir-
cuits must be at least 50 mm (string length).
40
Po: 684 mW
ELECTRICAL CONNECTION
Zone 1 and Zone 2 electrical circuits may be connected to the
intrinsically safe terminals. The maximum permissible values
for inductance and capacitance in these electric circuits must
be observed (see above).
To ensure safe operation, the barrier must be connected to the
potential equalisation via both of the PEQ connections (with
two parallel conductors). The cross-sectional area of the con-
ductor in each case must be at least 1.5 mm², in accordance
with EN 60079-14. If stranded cables are used, these must be
fitted with cable end-sleeves.
Those terminals of the safety barrier that are not intrinsically
safe may be connected only to signal circuits of operating
equipment complying with the following values:
U = ≤ ±24 V
N
I ≤ 50 mA
N
U ≤ 253 V~ (maximum safe voltage)
m
U explained
m
Um is the maximum voltage to earth that is permitted in any
operating equipment connected to the safety barrier termi-
nals that are not intrinsically safe (this is usually the mains
voltage: 230V~). Should this voltage across the barrier be ex-
ceeded due to a malfunction, the intrinsic safety of the barrier
is guaranteed up to this (excess) voltage.
Connection (no complete circuit diagram)
OPERATION
The safety barrier may only be used for its intended purpose
and only when in an undamaged and clean condition.
The safety barrier is maintenance-free.
NOTICE! If the permissible electrical ratings for current and
voltage are exceeded, the internal fuse will be irreparably da-
maged. It is neither possible nor permissible to repair this fuse.
If the fuse is damaged, the safety barrier must be replaced.