APTech AZ4571 - Manual (Page 3)

Operation Manual Pneumatic Diaphragm Valves (NC)
D. Indicating Switch Option Installation
1. IS option for AK/AP/AZ3000, AP3113, AP3130, or AK/AP/AZ3200:
a. Review the following specifications to verify the switch is appropriate for the installation.
Switch model OKI Sensor ORT551
Switch type SPDT
Operating temperature -40 to 80 C
Supply voltage 30 VDC max.
Power 3 VA max.
Switching current 0.2 A max.
Carrying current 0.5 A max.
Life expectancy Up to 5,000,000 cycles at 1.2 VA
Connectors Stranded 24 AWG wire (blue, black, and
brown leads), 10 ft (3 m) long
b. Connect blue lead to common output.
c. Connect brown lead to normally closed input (the circuit will be closed when valve is
closed).
d. Connect black lead to normally open input (the circuit will be closed when valve is open).
2. ISO and ISC option for AK/AP/AZ3550, AK/AP/AZ4550, or AP3700:
a. Review the following specifications to verify the switch is appropriate for the installation.
ISO switch model Alcoswitch MSPM101C104
ISC switch model Alcoswitch MSPM101B104
Switch type SPST
Operating temperature -10 to 80 C
Supply voltage 50 VDC max.
Supply current 100 mA max.
Power 1.0 VA optimum
Initial contact resistance 100 milliohm max.
Life expectancy up to 5,000,000 cycles at 0.1 VA
Connectors Lug terminals – can be soldered or will accept
.110 quick disconnect receptacles
b. Connect common input to one lug terminal (solder wire or use .110 quick disconnect
receptacle).
c. Connect signal input to other lug terminal (solder wire or use .110 quick disconnect
receptacle). For ISO option, the circuit will be closed when the valve is open. For ISC, the
circuit will be closed when the valve is closed.
Manual 15000005 Rev 7 Page 3 of 4