Watlow Series SD PID Profiling Controller - Manual (Page 15)

Wa t l o w S e r i e s S D • 1 3 • C h a p t e r 2 I n s t a l l a n d W i r e
Figure 13a — 0 to 20 mA Process Input
(all model numbers)
• Input impedance 100 Ω, dc only.
• Controller does not supply power for the current loop.
6
8
9
10
11
8
11
+
-
4
8
9
10
11
5
6
7
8
11
8
9
10
11
5
6
7
8
11
+
+
+
-
-
-
Transmitter
Power
Supply
Two Wire Transmitter Wiring
Figure 13b — Output 1 Mechanical Relay
SD_ _ - _ J _ _ - _ _ _ _
• Form A contact
• 2 A, resistive
• 125 VA pilot duty, 120/240VÅ (ac), inductive
• See Quencharc note.
• 240VÅ (ac) maximum.
• 30VÎ (dc) maximum.
• For use with ac or dc.
• Minimum load current 10 mA
• Output does not supply power.
4
56
normally open 6
common 5
Internal Circuitry
COM.
N.O.
Mechanical Relay
5
6
Figure 13c — Output 1 Solid-state Relay
SD_ _ - _ K _ _ - _ _ _ _
• Form A contact
• 0.5 A maximum, resistive
• 20 VA pilot duty, 120/240VÅ (ac), inductive
• See Quencharc note.
• 24 to 240VÅ (ac).
• Minimum load current 10 mA
• Maximum leakage current 100 μA
• Not for use with direct current (dc).
• Output does not supply power.
4
56
normally open 6
common 5
Internal Circuitry
COM.
N.O.
Solid-state Relay
5
6
Solid-state Switch
ç
WARNING: Process input
may not have sensor break
protection. Outputs can
remain full on. Check your
input settings.
ç
Warning:
Use National Electric (NEC)
or other country-specific
standard wiring and safety
practices when wiring and
connecting this controller
to a power source and to
electrical sensors or periph-
eral devices. Failure to do
so may result in damage
to equipment and property,
and/or injury or loss of life.
Quencharc Note:
Switching pilot duty inductive
loads (relay coils, solenoids,
etc.) with the mechanical re-
lay or solid-state relay output
options requires use of an
R.C. suppressor.
Watlow carries the R.C. sup-
pressor Quencharc brand
name, which is a trademark of
ITW Paktron. Watlow Part No.
0804-0147-0000.
Spring clamp wiring connector
note:
To insert the wire, push the
wire into the desired connec-
tion number, and it should
automatically lock into place.
To remove the wire, press and
hold the orange release tab
with a small screwdriver. Pull
the wire out of the connection.
Solid or tinned wire recom-
mended.
Note: To prevent ground loops,
isolation needs to be main-
tained from input to output
when using switched DC or
analog process outputs.