NSM-3E Signal Monitor Unit
Operations Manual
Eberle Design Inc.
Page 10
Section 5
Specifications
5.1 ELECTRICAL
5.1.1 POWER REQUIREMENTS
Operating Line Voltage .......................................................................... 75 to 135 VAC RMS
Operating Line Frequency ..................................................................................... 60 +_3Hz
Power Consumption ......................................................................................... 5W (nominal)
5.1.2 AC VOLTAGE MONITORS (POSITIVE OR NEGATIVE HALF WAVE INPUT)
Green Signal Inputs
No Detect .................................................. less than 15 Vrms
Detect .................................................. greater than 25 Vrms
Yellow signal Inputs
No Detect .................................................. less than 15 Vrms
Detect .................................................. greater than 25 Vrms
Walk Signal Inputs
No Detect .................................................. less than 15 Vrms
Detect .................................................. greater than 25 Vrms
Red Signal Inputs
No Detect .................................................. less than 50 Vrms
Detect .................................................. greater than 70 Vrms
Red Enable Input
No Detect .................................................. less than 50 Vrms
Detect .................................................. greater than 70 Vrms
LEDguard
®
Low Threshold Signal Inputs
No Detect .................................................. less than 15 Vrms
Detect .................................................. greater than 25 Vrms
LEDguard
®
High Threshold Signal Inputs
No Detect .................................................. less than 50 Vrms
Detect .................................................. greater than 70 Vrms
AC Line Voltage Monitor
Drop-out ............................................. less than 92 +_2 Vrms
Restore ..........................................greater than 96 +_2 Vrms
5.1.3 DC VOLTAGE MONITOR
+24 VDC Inputs
Inactive ..................................................... less than +18 Vdc
Active ....................................................greater than +22 Vdc
5.1.4 LOGIC INPUTS
Controller Voltage Monitor, External Reset, +24V Monitor Inhibit
Active .......................................................... less than +8 Vdc
Inactive .................................................greater than +16 Vdc
5.2 TIMING FUNCTIONS
Conflict
No Fault ....................................... less than 200 milliseconds
Fault ......................................... greater than 450 milliseconds
Typical ........................................................ 350 milliseconds