ENTRON Controls, LLC. • 700142B • Page 1
APPLICATION NOTE 700142B
INSTALLATION OF EN1000 CASCADE-FP (SCR)
ENTRON Controls, LLC.
700142B
1402 S. Batesville Road
05/14
Greer, South Carolina 29650
(864) 416-0190
FAX: (864) 416-0195
Model EN1000 Cascade-FP (SCR) is a Cascade/Multi-Valve Control designed to fire existing SCRs.
This model is equipped with state-of-the-art microprocessor-based logic circuits, valve and control
power supplies, and firing circuits for each of the existing SCRs. The EN1000 Cascade-FP (SCR)
consists of three assemblies to provide easy location and mounting. This document is intended to
provide general installation guidelines and wire routing techniques. All component parts of the
EN1000 Cascade-FP (SCR) are identical to those used in our current Cascade/Multi-Valve controls.
1.0 INDIVIDUAL COMPONENT ASSEMBLIES
Firing Board Assembly
This assembly consists of a 9" X 24" plate containing from 1 to 8 individual firing board assemblies.
Each individual firing board assembly is equipped with a sense transformer and surge resistors
dedicated to each existing SCR. Each individual firing board has inputs for the cathode and gate
connections, the temperature limit switch and 16 pin (In and Out) firing board interface sockets to
cascade firing signals from the microprocessor control board. The main power input terminal strip
is also located on this assembly. The power terminal strip (TS11) inputs are clearly labeled for the
L1 and L2 and the various SCRs H1 connections.
Input/Output Control Power Supply Assembly
This assembly consists of a 9" X 24" mounting plate containing a control power transformer, valve
transformer, peripheral input circuit board, valve output circuit board, and control power fuse block.
Power (L1 and L2) inputs to the valve transformer primary are clearly labeled. The valve output
circuit board (Terminal Strip TS10) provides 8 available 120VAC outputs. The peripheral input
circuit board provides connections for foot switch (initiation), Emergency Stop, Process Outputs,
Pressure Switch, etc., connected via the TS1 terminal strip. Fuse (F1) is a 6/10 amp which limits
current flow to the control circuits.
Control Display Assembly
This assembly, a Display Mounting Plate measuring 9-9/16" X 9-9/16", consists of a microprocessor
control panel display with push button programming and interface ribbon cable connector. Data
entry and direct access to all schedule parameters are possible through this panel. For more
information regarding programming and operation, see Instruction Manual 700194.
Options
Our entire Cascade product line, including the EN1000 Cascade-FP (SCR), can be fitted with the
following options:
RS232
Computer Interface Option (Instruction Manual 700140)
S99
100 Schedule External Schedule Select Option (Application Note 700115)
TSS
Terminal Strip Skip (Contactor Disable) Option (Application Note 700138)
PLS
Program Lockout (key switch) Option
