Watlow Series 935A User’s Manual
4 3
∫
WARNING: All electrical wiring and fusing must conform to local and national electric codes. Contact local authorities for
further information. Failure to comply with electric codes could result in injury or death, or damage to property.
ç
CAUTION: Failure to install a 60 to 70
Ω
, 0.5w resistor across the customer-supplied Front Panel Lock switch will cause the
panel to lock out even when the switch is open. Injury to personnel, or damage to equipment or property could result.
∫
WARNING: When Output 1 is a Front Panel Lock
[`Ot1]
=
[`FPL]
,
the output is energized! Do not connect a power switching
device to Output 1; injury or death, or damage to equipment or property could result.
NOTE:
Switching inductive loads (relay coils, solenoids, etc.) with the mechanical relay or solid-state relay output options
requires using an R.C. suppressor. Watlow carries the R.C. suppressor Quencharc brand name, which is a trademark of
ITW Pakron. Watlow Part No. 0804-0147-0000.
Output 1; Front Panel Lock
S2
–
1
S1
+
2
–
3
+
4
5
6
7
8
OT1
IN
OT2
POWER
60 to 70
Ω
, 0.5w resistor
Output 2; Solid State Relay; "K"
S2
–
1
S1
+
2
–
3
+
4
5
6
7
8
OT1
IN
OT2
POWER
Output 2; Electromechanical Relay; "D"
S2
–
1
S1
+
2
–
3
+
4
5
6
7
8
OT1
IN
OT2
Power
Output 2; Switched DC; "C"
S2
–
1
S1
+
2
–
3
+
4
–
5
+
6
7
8
OT1
IN
OT2
POWER
Internal Circuitry
+5.7 to 8V
Current
Limit
60mA
Output 1; Switched DC; "C"
S2
–
1
S1
+
2
–
3
+
4
5
6
7
8
OT1
IN
OT2
POWER
Internal Circuitry
+5.7 to 8V
Current
Limit
60mA
Output 2 Wiring
Output 1 Wiring
See Caution
