28
User Manual
Zenex Pro
DESCRIPTIONS
The back panel connections are described as under:
PV INPUT :
RTD Pt100, 3-wire / Thermocouple (Terminals : 17, 16, 15)
Connect 3-wire RTD Pt100 sensor or Thermocouple as shown below.
Figure 11.2 (a)
Thermocouple
Figure 11.2 (b)
RTD Pt100, 3-wire
RTD Pt100, 3-wire
Connect single leaded end of RTD bulb to terminal 17 and the double leaded ends to terminal 16 and 15 (interchangeable) as
shown in Figure 11.2 (a).
Use low resistance copper conductor leads of the same gauge and length. Avoid joints in the cable.
Thermocouple
Connect Thermocouple Positive (+) to terminal 17 and Negative (-) to terminal 16 as shown in Figure 11.2 (b). Use correct type
of extension lead wires or compensating cable. Avoid joints in the cable.
15
16
17
15
16
17
+
-
Figure 11.3
+
-
14
13
Ouput1
V/mA
NO
C
NC
9
8
7
3
4
18
19
20
Output1/ Output2 / Output3
Relay
9
8
12
13
18
19
Output1/ Output2 / Output3
SSR
OUTPUT1 :
Control Output - Relay (Terminals : 3, 4)
Control Output - SSR
(Terminals : 12, 13)
Control Output - V/mA (Terminals : 13, 14)
OUTPUT2 :
Alarm / Control - Relay (Terminals : 18, 19, 20)
Alarm / Control - SSR
(Terminals : 18, 19)
OUTPUT3 :
Alarm / Control - Relay (Terminals : 7, 8, 9)
Alarm / Control - SSR
(Terminals : 8, 9)
Relay & SSR Control Outputs are available as standard. V / mA Control Output is available on request.