CTF Single Phase Advanced SCR
Power Controller Quick Start Manual
0037-75558 (PK536)
This manual is intended to be a quick reference guide for basic installation require-
ments and an overview of the connections, wiring considerations, and general spec-
ifications for the CTF Advanced SCR Power Controller. For complete installation,
operation, programming and configuration, please refer to the following manuals:
PK533 CTF Hardware Instruction Manual; PK534 CTF & CTF-XTRA Controller Pro-
gramming Manual; PK537 C-PWR Configuration Software Manual. The most current
revisions may be found on the Chromalox website: www.chromalox.com.
1. IMPORTANT SAFEGUARDS
2. INSTALLATION
ELECTRIC SHOCK HAZARD: Read and understand all instructions before
installing, servicing or operating this controller. Failure to do so could
result in equipment or property damage as well as personal injury and
even death.
HIGH VOLTAGE is used in the operation of this equipment; DEATH ON
CONTACT may result if personnel fail to observe safety precautions.
Learn the areas containing high-voltage connections when installing or
operating this equipment.
Be careful not to contact high-voltage connections when installing or
operating this equipment. Before working inside the equipment, turn
power off and ground all points of high potential before touching them.
ELECTRIC SHOCK HAZARD: Any installation involving control equip-
ment must be performed by a qualified person and must be effectively
grounded in accordance with the National Electrical Code or local gov-
erning electrical code/authority, to eliminate shock hazard.
The owner/installer must provide all necessary safety and protection
devices and follow all current electrical wiring standards and regula-
tions. Failure to do so may compromise the integrity of the controller
and/or cause product failure resulting in a safety risk to operational and
service personnel.
This controller utilizes a heat sink which is designed to cool the unit
during operation. Under no circumstance should air flow around the
controller be compromised in any way. Failure to do so may result in the
overheating of the controller, product failure, product temperatures and
even fire.
During continuous operation, the heat sink can reach very high tem-
peratures, and keeps a high temperature even after the unit is turned
off due to its high thermal inertia.
Installation Wiring Note:
Use the extra rapid fuses as indicated in the CTF Hardware Instruction Manual PK533,
according to the wiring schematic examples and controller rating. Additionally, the
applications with solid state units require a safety automatic switch to disengage the
load power line during certain alarm events.
Input & Output Connections: CTF 25 – 120 Amp Models Input & Output Connections: CTF 150 – 250 Amp Models
WITHOUT Modbus Option
Key HB
J2
TTL port for
Port Configuration
WITH Modbus Option
Key HB
J3, J4
RJ10 connectors
RS485 serial line
Modbus
Switch for
serial line
Address x 10
Address x 1
Syncronous output for
Master/Slave connection
Alarm output
(solid state relay - HB option)
Key HB
Green Led (RUN)
Yellow Led (STATUS)
Red Led (Alarm output HB)
Yellow Led (Status digital input)
Led: Green = SCR ON
Yellow = Temperature OVER
1/L1
LINE connection
3/L2
Reference connection
Earth Ground
2/T1
LOAD connection
Fixing screw
at heatsink
Fixing screw
at heatsink
J1
Power supply /control
connector
Power supply terminal 24Vac/Vdc
Digital input (PWM input)
Potentiometer output power supply (+5Vdc
)
Input control signal (+)
(GND)
Bottom View Without
Modbus RS485 Option
Bottom View WITH
Modbus RS485 Option
2/T1
Load
Conn.
Fan Protection Grill
J5
Config.
TTL Port
2/T1
Load
Conn.
J6, J7
RJ10
connector
serial RS48
Modbus
Dip Switch
serial line
Top View
Fan
Protection
Grill
1/L1
Line
Connection
Line voltage
reference
connection
J8
3/L2
n.c.
RUN ...................................(Green)
STATUS .............................(Yellow)
ALARM HB ......................(Red)
DIGITAL INPUT STATUS (Yellow)
ON SCR............................(Green)
OVER Temperature...........(Yellow)
J8
Front Cover
Fastener (Fuse Access)
1/L1
Outputs
Supply
Status LEDs
Digital Input
Key HB
Address Rotary
Switch
(Optional)
Analog Control
Input Connector
2/T1 Load
Connection
J1
HB OUT Switch (Optional)
OUT Master (7 V)
GND
J2
24 Vac/dc
24 Vac/dc
Earth
J3
n.c.
n.c.
+ INDIG (PWM input)
GND
J4
OUT +5V (Potentiometer)
+ IN
SHUNT – mA
GND
Line Voltage
Connector
Line Connection
Recommended Wire Gauges
CTF Current
Level Terminal Cable Wire Wire Terminal Tightening Torque / Tool
25A 1/L1, 2/T1, PE
4 mm
2
10 AWG
Wire terminal / Eye D. 6mm 2.5 Nm / Phillips screwdriver PH2 - PH3
40A 1/L1, 2/T1, PE
10 mm
2
7 AWG
Wire terminal / Eye D. 6mm 2.5 Nm / Phillips screwdriver PH2 - PH3
50A 1/L1, 2/T1, PE
10 mm
2
7 AWG
Wire terminal / Eye D. 6mm 2.5 Nm / Phillips screwdriver PH2 - PH3
60A 1/L1, 2/T1, PE
16 mm
2
5 AWG
Wire terminal / Eye D. 6mm 2.5 Nm / Phillips screwdriver PH2 - PH3
75A 1/L1, 2/T1, PE
25 mm
2
3 AWG
Wire terminal / Eye D. 6mm 2.5 Nm / Phillips screwdriver PH2 - PH3
90A 1/L1, 2/T1, PE
35 mm
2
2 AWG
Wire terminal / Eye D. 6mm 2.5 Nm / Phillips screwdriver PH2 - PH3
120A 1/L1, 2/T1, PE
50 mm
2
1/0 AWG
Wire terminal / Eye D. 6mm 2.5 Nm / Phillips screwdriver PH2 - PH3
-
3/L2
(Ref. Vline)
0.25 ...2.5 mm
2
23...14 AWG
Wire terminal tip
0.5 ...0.6 Nm / Screwdriver blade 0.6 x
3.5 mm
150A 1/L1, 2/T1
70 mm
2
2/0 AWG
Wire stripped for 25 mm or with
crimped pre-insulated terminal tube
6 Nm / No. 6 hex head wrench
200A 1/L1, 2/T1
95 mm
2
4/0 AWG
Wire stripped for 25 mm or with
crimped pre-insulated terminal tube
6 Nm / No. 6 hex head wrench
250A 1/L1, 2/T1
120 mm
2
250 KCMIL
Wire stripped for 25 mm 6 Nm / No. 6 hex head wrench
-
3/L2
(Ref. Vline)
0.25 ...2.5 mm
2
23...14 AWG
Wire stripped for 8 mm or with tag
terminal
0.5 ...0.6 Nm / Flat-head screwdriver tip
0.6 x 3.5 mm
NOTE: Cables must be Copper “Stranded Wire” or “Compact-Stranded Wire” type with max. operating temp. 60/75°C