A.P.O. - ELMOS v.o.s., Pražská 90, Nová Paka 509 01
tel. +420 493 504 261, fax: +420 493 504 257, e-mail: [email protected]
24
8
PANELMETER FUNCTIONS
fig. 24
Limit switch diagram for modification with 4 inputs
On 4-input modification first press key
MENU
and enter panelmeter configuration menu scroll to alarm func-
tions
ALA-1
to
ALA-4
with repeated pressing of
MENU
, enter submenu and scroll to parameter in. Press
key MENU and get to the other submenu, where define inputs according to diagram (
in-1
,
in-2
,
sub-
in
, addin,
IN-3
,
IN-4
). Function in-1 to IN-4 is configuration of limit switch for given inputs. SUBIN
is here defined as difference of values on inputs 1 and 2 (vst 1 – vst 2) and ADDIN enables to set as input
sum of inputs 1 and 2 (vst1 + vst2).
Next step is setting of state of output relay contacts when alarm values are exceeded. Scroll to RELE func-
tion, press
MENU
key and enter setting mode. With keys UP and DOWN select either ON (switches when the
value is exceeded), or OFF (switches off when the value is exceeded), confirm the setting with pressing SET.
Then in configuration menu scroll to
ALSP
function, where value of limit switch is assigned to inputs.
Select the value with
UP
and
DOWN
keys and confirm with pressing SET key. Further step is setting of re-
quired value of SP, that is designated as SP in configuration menu, and is common for all limit switches.
Then define mode of limit switches. Scroll to function mode in configuration menu and select either process
mode, relating to measured value (function STATE), or relative mode, derived from required value of SP as
its allowable deviation (function SHIFT), see characteristics Fig. 25, 26, 27, 28. After these parameters are
set select hysteresis HYST in configuration menu. Last item necessary for complete setting of limit switches
is
TRAL
function. This function determines whether limit switch should automatically switch off (functi-
on
TRAL
of respective input is in state no) after vanishing of alarm conditions, or if limit switch remains
permanently switched/switched off after exceeding alarm conditions and it can be switched off only after
alarm conditions subsideby pressing SET key (function TRAL of respective input is in state yes). Permanent
alarm is also switched after failure of power supply voltage. In configuration menu scroll to TRAL function,
press MENU key and enter setting mode and assign state ON or OF to respective input. Confirm the setting
by pressing SET. Function of limit switch is shown with characteristics on Fig. 25, 26, 27, 28.
