SCZF1 SSR Power Controller
Installation
Rev 2
Ametek HDR Power Systems
5
CHAPTER 2 - Installation
2.1 Mounting
the
SCZF1
Determine space and mounting hole requirements by referring to the outline drawing in the Appendix.
Mount the unit so the line and load connections are at the top and ensure that upward airflow over the
heat sink fins is unrestricted. Separate mounting brackets are provided.
2.2 Load
Wiring
Connect the load to the proper terminals (refer to schematic in Appendix A) using appropriately sized
and insulated conductors. All input/output conductors should be stranded copper wire only; minimum
temperature rating is 75 ºC.
2.3 Line
Wiring
Connect input lines from the fused disconnect or circuit breaker to the Line terminal (refer to schematic
in Appendix A) using appropriately sized and insulated conductors. (
NOTE
: Input power should be
routed through a fused disconnect or circuit breaker with a fuse or trip rating of 100% to 125% of the
current rating stamped on the nameplate of the SCZF1 series unit.) Torque Line and Load connection
to 25 in-lbs.
2.4
Command Signal Input
HDR’s SCPF1 SSR Power Controllers have the capability of having a current, voltage or potentiometer
Command Signal input. For current command (4-20 mA) connected the process controller across
terminals 1 and 2, for voltage command remove jumper in Figure 3.1.
Figure 2.1 Process Controller Input Connections
WARNING - ELECTRIC SHOCK CAN KILL
HAZARDOUS
VOLTAGES
exist at the
(LINE and LOAD)
terminals when the
input voltage is connected. This condition exists even when the Controller is
set to deliver zero output. Always remove power and properly lock out power to
the unit before attempting any service, including the load.
WARNING
Branch circuit overcurrent protection required is to be provided in accordance
with the national and local codes of the inspecting authority.
