Series S Solid-State Staging Controller Instruction Manual
6
Series S Solid-State Staging Controller Instruction Manual
7
6. Contractors are connected to the .250 push-on
terminals marked on through ten. Connect one lead
from each contactor coil to the terminals starting from
number one up to a maximum of ten. Connect the
return wire from the contactors to X2, outside terminal.
Note: Power lines should be free of high power radio
frequency signals or other damaging voltage
spikes. If R.R. induction heating equipment or high
powered electric welders are nearby, filter all power
lines leading to the staging controller.
7. If a fuse blows, check wiring and/or contactors for
shorts or overcurrent.
8. Troubleshooting - Units with standard inputs (4-20
mA, or 135 ohms slidewire) can be quickly checked by
jumpering terminals D and E. All heating stages should
turn on, as indicated by the red L.E.D. on each stage.
Remove jumper from D and E and connect to C and D.
All heat stages should turn off and cool stages (if any)
should turn on., see red L.E.D. on cool stages. Remove
jumper from C and D.
9. Connect input signal to appropriate lettered terminals
– A through F. Standard Units: Terminals A & B – 4-20
mA source (Temperature Controller).
(A Input) Terminals C, D & E – 135 ohms slidewire
(Thermostat).
10. Turn Power on and check total system for proper
operation.
Warning: Since solid state devices do not turn off in
the same sense as relay contacts, a potential
shock hazard exists. For your protection, be
certain all line and control power has been
disconnected before working on the unit or
the auxiliary contactors.
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