Unicont PKK-312 User Manual

1. APPLICATION
The UNICONT PKK–312– series comprises
4...20 mA current controlled limit switches. The
relay output of the units switch at the current
limit values (taught to the unit), depending on
the limits, switching difference or window
comparison modes. Error status indication can
be programmed so that the relay gets
energized or de-energized when detecting a
failure. Failure may be discontinuity in the cable
/ lower value fault current or short circuit / upper
value error current. The unit is suitable for
powering all NIVELCO manufactured 2-wire
(4...20 mA) transmitters. Some models of this
series meet the requirements of intrinsically
safe operation. The UNICONT PKK–312–8 Ex
can monitor the DC powered, 2-wire
NIVOSWITCH Ex type vibrating fork's output
current changes between freely vibrating and
immersed states without any further
programming.
2.2 S
PECIAL DATA
Type PKK–312–5Ex
230 V AC ±10%
Power supply range
Power consumption
Safety maximum voltage
Switching levels
Ex marking
U
Intrinsic safety data
Output load capability
Electrical protection
Reference document number
Ambient temperature
2.3 A
CCESSORIES
– User's Manual
– Warranty Card
– EU Declaration of Conformity
2.4 D
IMENSIONS
2.5 O
RDER CODE
P K K – 3 1 2 – E *
X
P / E C
OWER SUPPLY X ODE
230 V AC 1
110 V AC 2
24 V AC 3
24 V AC / DC 4
230 V AC E 5 * Order codes of an Ex versions end in 'Ex'
X
110 V AC E 6 ** For DC powered, 2-wire NIVOSWITCH Ex vibrating fork of NIVELCO
X
24 V AC / DC E 7
X
24 V AC/ DC E 8**
X
Thank you for choosing a NIVELCO product!
2. TECHNICAL DATA
2.1 GENERAL
Type
Nominal input current range
Accuracy of switching level / Threshold level
Discontinuity threshold / Lower value fault current
Short circuit threshold / Upper value fault current
Input impedance
Input overload capability
Switching delay
– Output
– Rating
– Insulation strength
– Electrical / Mechanical life expectancy
Electrical connection
Mechanical connection
Ingress protection
Weight
Ex version
PKK–312–6Ex PKK–312–7Ex
110 V AC ±10%
50...60 Hz 50...60 Hz
< 2.5 VA
U = 253 V AC
m
2 values in the range of 1...22 mA
II (1) G [Ex ia Ga] IIB
II (1) D[Ex ia Da] IIIC
= 28.4 V; I = 140 mA; P = 1 W; U
0 0 0 0
L = 6 mH; C = 50 nF
0 0
I = 22 mA when I = 22 mA when
T T
U ≈ 12 V U
OUT OUT
Class II
pkk3121m060bh_06
PKK–312–
1...22 mA
±0.1 mA
3.7 mA
22 mA
10 Ω
Max. 100 mA (continuous)
0.1 s; 1 s; 2 s; 5 s selectable
1× SPDT
250 V AC, 8 A, AC1
4000 V 50 Hz
10 / 2 x 10
5
Max. 2.5 mm
2
or max 4 mm 2 (AWG12) solid wire
EN 60715-35 rail
IP20
~210 g (~0.5 lb)
PKK–312–8Ex PKK–312–1
24 V AC ±10%, 50...60 Hz, 230 V AC ±10%
24 V DC ±15% 50...60 Hz
< 2.5 VA or < 2.5 W
10.5 mA; 12.5 mA
II (1) G [Ex ia Ga] IIC
II (1) D[Ex ia Da] IIIC
= 28.4 V; I = 80 mA; P = 0.6 W
0 0
L = 4 mH; C = 50 nF
0 0
–
≈ 15 V
Class III
−25...+55 °C (−13...+131 °F)
3. INSTALLATION
UNICONT PKK–312– must be mounted on an EN 60715-35 rail.
ATTENTION!
Before installing the device, make sure that the input current values can be provided by the
loop of the application. If not, teach the current values to the device before installing it. (See
chapter 5 "Commissioning, Setting, Programming")
4. WIRING
4.1 E
X MODELS
PKK–312–8Ex with
NIVOSWITCH Ex vibrating
fork
4.2 S
TANDARD MODELS
PKK–312–1 ... PKK–312–4
with 4-wire active transmitter
(e.g. EchoTREK STA–460)
switching
6
(AWG14) twisted,
Standard version
PKK–312–2 PKK–312–3
110 V AC ±10% 24 V AC ±10%
50...60 Hz 50...60 Hz
< 2.7 VA
–
2 values in the range of 1...22 mA
–
–
U = 30 V
0
I = 70 mA U = 16 V
MAX OUT min
Class II
–
PKK–312–7Ex with 2-wire Ex
transmitter (e.g. EchoTREK
SEA–380–6 Ex)
PKK–312–1 ... PKK–312–4
with 4 wire active transmitter
(e.g. MICROSONAR UTS–211)
PKK–312–4
24 V AC ±10%, 50...60 Hz,
24 V DC ±15%
< 2.5 W
U = 24 V
0
I = 80 mA U = 23 V
MAX OUT min
Class III
PKK–312–5Ex ... PKK–312–7Ex
for monitoring of Ex passive
switch and cable
PKK–312–1 ... PKK–312–4
for monitoring of passive
switch
pkk312en21h06  2/1