Installation
SCZF1 SSR Power Controller
6
Ametek HDR Power Systems
Rev 2
Some applications only require a manual control input and not a closed loop input from a process
controller. This potentiometer may be located on a remote panel near other controls related to the
process being powered by the SCZF1. Connect a potentiometer rated 500 ohms to 5 k
Ω
, 1/2 Watt
minimum as in Figure 2.2 or the schematic in Appendix A. Remove jumper in Figure 3.1.
Figure 2.2 Potentiometer Input Connections
2.5
Heatsink Thermostat Contacts
Normally-open (N.O.) or normally-closed (N.C.) thermostat is mounted to the heat sink when this
option is purchased. This thermostat, which close or open on high heat sink temperature (200 ºF),
may be used to initiate an alarm, shunt trip, or other device for SCR protection.
