B-TEK Scales T405S, Service Manual

Page: 100 / 156

100 T405S Indicator Service Manual
8 Option cards
8.7 Internal 120 VAC relay card (for IP69K only)
The AC relay converts three logic level outputs into AC solid state relays internal to the
indicator. The AC relay card is shown in
Figure 8.9 .
Figure 8.9 AC relay option card
8.7.1 Specifications
Output Channels (all positions) Switched AC
Maximum output voltage 120V rms
Minimum output voltage 20V rms
Maximum output current 1A rms
Minimum output current 5mA rms
Maximum off-state voltage 400V peak
Maximum off-state leakage current 1mA rms
Maximum power dissipation 1.6 W
Load power factor for guaranteed turn-on 0.25
If the device to be controlled does not fall within these standards it is suggested that
you use a mechanical relay for absolute circuit open and/or closure with appropriately
rated contacts for the loading characteristics of the device.
WARNING: Risk of Electrical Shock. Insure power is removed from the indicator
before installing the option card.
This option card is capable of switching up to 1Amp Max. per channel at 20-
120VAC.
Please refer to the appropriate National Electrical Code regulations with
regards to the switched AC mains voltage wiring sizes and insulation
requirements.