Ascon tecnologic KM3-L Engineering Manual

KM3 - L
TC10
Limit controller
Engineering Manual
Code: IST_MKM3-L ENG00
Ascon Tecnologic S.r.l.
Viale Indipendenza 56, 27029 Vigevano (PV) - ITALY
Tel.: +39 0381 69871/FAX: +39 0381 698730
www.ascontecnologic.com
e-mail: info@ascontecnologic.com
1. OUTLINE DIMENSIONS (mm)
1.1 INSTRUMENT DIMENSIONS
KM3-L
1.2 PANEL CUT-OUT
45 +0.6 mm
+0.023
1.78
65 mm min.
2.56 in min.
in
Ascon Tecnologic - KM3 - L - ENGINEERING MANUAL - PAG. 1
1.3 MOUNTING REQUIREMENTS
This instrument is intended for permanent installation, for
indoor use only, in an electrical panel which encloses the
rear housing, exposed terminals and wiring on the back.
Select a mounting location having the following characteristics:
1. It should be easily accessible;
2. There is minimum vibrations and no impact;
3. There are no corrosive gases;
4. There are no water or other fl uids (i.e. condensation);
5. The ambient temperature is in accordance with the
operative temperature (0 to 50°C);
6. The relative humidity is in accordance with the instrument
specifi cations (20 to 90%);
The instrument can be mounted on panel with a maximum
thickness of 8 mm.
When the maximum front protection (IP65) is desired, the
optional gasket must be mounted.
2. CONNECTION DIAGRAM
ELECTRICAL CONNECTIONS
Output 1: 4-20 mA
RS485
Output 4: 0-12V DO
Analogue input
12V DC
(note)
PV
Thermo-
4 to 20 mA mV, V mA
couple
2 wiretransmitter
12VD C
Pt1000 Pt100
(note )
PV
4 to 20 mA
3 wiretransmitter
2.1 GENERAL NOTES ABOUT WIRING
1. Do not run input wires together with power cables.
2. External components (like zener barriers, etc.) connected
between sensor and input terminals may cause errors in
measurement due to excessive and/or not balanced line
resistance or possible leakage currents.
3. When a shielded cable is used, it should be connected at
one point only.
4. Pay attention to the line resistance; a high line resistance
may cause measurement errors.
2.2 INPUTS
2.2.1 Termocouple Input
External resistance: 100Ω max., maximum error 25 mV.
Continuity detection current: 250 nA.
Cold junction: automatic compensation between 0 to 50°C.
Cold junction accuracy: 0.05°C/°C after a warm-up of
TERMINALS
DI1
OP1 Pin connector
∅
1.4 mm max.
(0.055 in.)
Limiter
Output
(OP 2) L
Stripped wire
L: 5.5 mm
OP3
(0.21 in.)
OP4
(note)
Line
100 to 240 V ac
Neutral
Note: Terminal 4 can be programmed as:
- 0 to 12 V SSR Drive Output (OP4) connecting
the load between terminals 4 and 16;
- 12 Vdc (20 mA) transmitter power supply
connecting the 2 wire transmitter between
terminals 4 and 1; for 3 wire transmitter connect
terminal 4 to transmitter power supply input and
terminal 1 and 2 to transmitter signal output.
2
+
1