SIGRIST StackGuard 2, Инструкция по эксплуатации

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Instruction Manual StackGuard 2 System
16 10198E/3
Item Name Function
1 Main switch Switches power to the entire installation on and
off.
2 Fasteners The front cover (3) is opened by turning the two
fasteners.
3 Front cover Protects the control unit against external effects.
4 Operating panel The system is operated with this panel (  Section
4.2).
Checking and
safety elements 5 Earth-leakage
circuit breaker Protects the heater and the main blower.
6 Excess-current
circuit breaker Protects the heater. The operating levers are
connected with a link, so that all levers are
operated simultaneously when the breaker trips.
7 Heat pack Protects the main blower. The heat pack is made
up of these elements:
 Rotary switch (for setting the main blower’s
rated current)

Cutout (for switching off the heat pack for
test purposes
 Reset button
Do not alter rotary switch (A)!
8 Test sockets
4 .. 20mA The current output signal can be measured at these
test sockets.
A short-circuit jumper connects the two test
sockets (4 .. 20mA
)
with each other, thus creating
a closed current loop.
9 RS-232
interface RS-232 interface for diagnostic purposes
10 Expert button Sealable button. Pressing this button activates the
expert mode.
This function is available to authorized persons
only!
11 Guard door The guard door protects personnel against lethal
voltages.
Before opening the door, always make absolutely
sure that no lethal electric voltages are still
connected to the instrument!