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In these cases it is recommended to install an
additional RC network across the external contact
(or close to the non protected contact of the
instrument) as shown in Fig. 8.
The capacity (C) and resistive (R) values are
shown in the following table.
LOAD
(mA)
C
(µF)
R
(Ω)
P.
(W)
OPERATING
VOLTAGE
<40 mA 0.047 100
<150 mA 0.1
22
<0.5 A
0.33 47
1/2
2
2
260 V AC
260 V AC
260 V AC
D) LOGIC OUTPUT FOR SSR DRIVE
_
18
OUT 1
19
+
_
+
Solid state relay
_
14
OUT 2
(AL1/Cool.)
The cable involved in relay output wiring must be
as far away as possible from input or communication cables.
15
+
_
+
Solid state relay
Fig. 9
SSR DRIVE OUTPUT WIRING.
These are time proportioning outputs.
Logic level 0: Vout < 0.5 V DC.
Logic level 1:
- 14 V + 20 % @ 20 mA
- 24 V + 20 % @ 1 mA.
Maximum current = 20 mA.
NOTES:
1) These outputs are not isolated.
A double or reinforced isolation between instrument output and power supply must be assured
by the external solid state relay.
2) Relay output and SSR drive output are both
available. When a SSR output is desired it is
necessary to enable the relay output and
viceversa (see chapter "Preliminary hardware
settings").
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