ADLINK ND-6067 - Manual (Page 121)

119
5.10.1 Features of NuDAM-6080
z Two 32 bit counter / frequency input channel
z Two digital output channels of open collector type
z 5000 Vrms isolation voltage for isolated input mode
z External gate control for counter input
z Alarm function with alarm output
z Programmable digital filter for noise rejection
z Programmable threshold setting of trigger level for non-isolated input
mode
z Programmable host watchdog timer for host failure protection
z Internal watchdog timer for device failure protection
z Easy programming by software
z Easy installation and wiring
5.10.2 Specifications of NuDAM-6080
‹ Interface
♦
Interface : RS-485, 2 wires
♦
Speed (bps) : 1200, 2400, 4800, 9600, 19.2K, 38.4K, 57.6K, 115.2K
‹ Counter Input
♦
Two independent 32 bit counters
♦
Input frequency: 20 kHz max.
♦
Input mode: Isolated or non-isolated
♦
Isolated input level:
Logic level 0: +1V max.
Logic level 1: +3.5V to +30V
♦
Isolation voltage: 5000 Vrms
♦
Non-isolated input level (programmable threshold):
Logic level 0: 0 to +5V (default = 0.8V)
Logic level 1: 0 to +5V (default = 2.4V)
♦
Input pulse width > 5
μsec.
♦
Programmable digital noise filter: