COMAC CAL CALOR 40 - Page 14

CALOR 40 Manual Page 14 (total 27) COMAC CAL s.r.o.
52
53
70
71
20
21
22
23
90
91
92
93
60
61
62
63
64
27
28
Pulse input 2 *
Pulse input 2 – ref. level *
Output - Failure *
Output - Failure – ref. level *
RS485/422 (Tx/Rx A+) *
RS485/422 (Tx/Rx B -) *
RS422 (Rx A+) *
RS422 (Rx B -) *
4÷20mA (+) *
4÷20mA (- ) *
MBUS *
MBUS *
Electrodes sensor flow (red wire)
Electrodes sensor flow (blue wire)
Sensor – ground
Stimulus – sensor (white wire)
Stimulus – sensor (black wire)
Mains terminal N
Mains terminal L
RTX+
RTX-
Note *) Terminals are not dependent on the meter's configuration
All the pulse inputs and outputs are isolated by optocouplers U
CE
max = 80V
Ic max = 50mA
P max = 100mW
I
F
max = 50mA
The polycarbonate box of the electronic evaluation unit is provided with PG 7 type of
grommet (max. outside diameter of the cable = 7 mm).
Make the connections without power supply in the following order:
1. Connect the inductive flow sensor to terminals 60,61,62,63,64 according to the Table.
!!! The shielded conductor must not be in direct (conductive) contact with the lower
sealing metallic cover.
2. Connect the connecting cables of the resistance temperature detectors (orange
terminals = the sensor in supply piping, grey terminals = the sensor in return piping)
to terminals 1 to 8. If twin line connection is used, the temperature sensors are
connected to terminals 2 and 6 for the supply temperature sensor and to 8 and 4 for the
return temperature sensor.
3. Other terminals (communication, input/output signals) are connected as needed
according to the above given table.
!!! The wires from the flow meter, temperature sensors and communication must
not be laid close to power cables and must not be exposed to effects of
electromagnetic fields, especially those generated by switch-mode power supplies.
4. Connect the power supply cable to terminals L, N. Install as an independent supply
circuit with its own protection. Bring the 230V/50 Hz supply voltage using a separate
two-wire cable without a disconnect switch with protection (0.,5 to 1Amp). The circuit
breaker must be sealed against unauthorized tripping.