Watlow Series PD - Manual (Page 15)

W a t l o w S e r i e s P D
■
13
■
C h a p t e r 2 I n s t a l l a n d W i r e
ç
Warning:
Use National Electric (NEC) or
other country-specific standard
wiring and safety practices when
wiring and connecting this con-
troller to a power source and to
electrical sensors or peripheral
devices. Failure to do so may re-
sult in damage to equipment and
property, and/or injury or loss of
life.
Quencharc Note:
Switching pilot duty loads (relay
coils, solenoids, etc.) with the
mechanical relay or solid-state
relay output options requires use
of an R.C. suppressor.
Watlow carries the R.C. suppres-
sor Quencharc brand name,
which is a trademark of ITW
Paktron. Watlow Part No. 0804-
0147-0000.
Note: 24 VЕ Е input power re-
quired to use single cycle,vari-
able time base output function.
Figure 13a — Output 1 Mechanical Relay
PD_ _ - J _ _ _ - _ _ _ _
• Form A contact
• 2 A, resistive
• 125 VA pilot duty, 120/240VÅ (ac), inductive
• 240VÅ (ac) maximum
• 30VÎ (dc) maximum
• See Quencharc note
• For use with ac or dc
• Minimum load current 10 mA
• Output does not supply power
Figure 13b — Output 1 Solid-state Relay
PD_ _ - K _ _ _ - _ _ _ _
• Form A contact
• 0.5 A, resistive
• 20 VA pilot duty, 120/240VÅ (ac), inductive
• 24 to 240VÅ (ac)
• See Quencharc note
• Minimum load current 10 mA
• Maximum leakage current 100 µA
• Not for use with direct current (dc)
• Output does not supply power
Figure 13c — Output 1 Switched DC
PD_ _ - C_ _ _ - _ _ _ _
• Supply current 30 mAÎ (dc) maximum
• Supply voltage 24VÎ (dc)
• Not recommended for switching mechanical relays
• Output supplies power
Internal Circuitry
dc-
dc+
24VÎ (dc)
Load
Switched DC
-
+
13
15
13 14 15
15 dc -
13 dc +
14 com
Internal Circuitry
COM.
N.O.
Solid-state Relay
14
15
Solid-state Switch
13 14 15
15 normally open
14 com
Internal Circuitry
COM.
N.O.
Mechanical Relay
14
15
13 14 15
15 normally open
14 com