INTEGRAL RSA K21-04.10
1/8
Application controllers en - 06.2001
Siemens Building Technologies Landis & Staefa Division
NRK16/A (with NSA) NRK16-B/A (with NSA)
T pes
NRK16/A Application cont olle with ten unive sal inputs1) and
two analogue, two digital and two combined outputs
NRK16-B/A Like NRK16/A, but with panel fo simple local ope ation
NSA Application modules, va ying acco ding to count y o egion,
fo plugging into base units
NRK16-T../A NRK16/A + NITEL integ ated communications module fo a maximum
of th ee additional devices (see manual NT21)
NRK14-T../A Like NRK16-T../A, but without analogue outputs (see
manual NT21)
NRK16-WEB/A NRK16/A + integ ated NIWEB communications module fo ope ation
of up to 15 additional devices via the Inte net (K1-07.62)
Technical data
Supply voltage Ext a low voltage (SELV-E)
Nominal voltage AC 24 V, 50/60 Hz
Max. tole ance +15 / 10 %
Powe consumption
Without output pe iphe als 3 VA
With output pe iphe als Max. 12 VA
Fuse The mal element (PTC)
Supply voltage fo pe iphe al devices
and emote ope ato te minal
Output voltage
DC15V ±10%, elect ically isolated f om AC24V
Output cu ent Max. 150 mA
Signal inputs
2)
Unive sal inputs
3)
Numbe 101)
Use Can be st uctu ed as T1, Ni1000, DC 0...10 V,
digital volt-f ee, o fo connection of NMID
Input impedance Ri (pull-up esisto ) = 10 kW to DC +15 V o
100 kW to GND (change-ove , see p. 6)
Remote cont ol input
Use
Can be st uctu ed as T1, Ni1000, DC 0 ... 10 V,
min. 1.5 sink, digital volt-f ee contacts, o NMID
Input impedance Ri (pull-up esisto ) = 10 kW to DC +15 V
Signal outputs
2)
Digital outputs
Numbe 2
Signal DC 0 / 24 V, 20 / +15 %
Sou ce cu ent Max. 50 mA
Analogue outputs
Numbe 2
Range DC 0 ... 10 V
Sou ce/sink cu ent Max. 2 mA
Technical data continued on page 2
Electrical protection
The powe supply is ove load-p otected
with a PTC the mal element.
All DC voltages a e elect ically isolated
f om the AC 24 V input.
All the inputs a e p otected against ove -
voltage (max. AC/DC 45 V). Low-pass fil-
te s p event fluctuations in measu ement.
All outputs a e sustained sho t-ci cuit
p oof.
High f equency inte fe ence is supp es-
sed by means of filte s, o in the case of
capacitive inte fe ence, discha ged via
the (ea thed) housing o the TE te minal
(functional ea th).
Important:
For direction connection of AC 24 V
3- ire peripheral devices, "GND"
and "NS" (^) must be connected.
NRK16/A, NRK16-B/A,
(NRK16-T../A, NRK14-T../A,
NRK16-WEB/A)
Control and interlock devices
Application controllers with
pre-programmed system-specific
application modules.
The controllers may be used
as stand-alone control and
interlock devices
for remote process control within
a management system
Especially suitable for use in small
heating, ventilation and air
conditioning systems.
1) The NMID multiplexe enables fou digital
inputs to be connected to a unive sal
output. (see K21-06.55). The function is
integ ated by use of a st uctu e mac o.
2) When connecting pe iphe al devices
with special input o output signals
(e.g. Pt100, phase cut o 3-position sig-
nals), the NTIO (NTIOS) single module
ca ie o an NATU adapte can be
used. (See K21-06.50 and K21-06.52).
3) The T1/Ni1000 supply voltage can be
disabled at the inputs (see page 5). DIP
switches a e p ovided to switch the
inputs f om T1 to Ni1000 and vice ve sa.