MERRICK Genetix Safety, Installation, Operation And Maintenance Instructions

Page 13 of 15
Charging the Batteries
Charging the batteries in the Remote User Interface can be done at any time by simply
plugging the wall transformer provided into the back of the remote unit (see photo
below). The wall transformer may be plugged into any AC outlet, 100-240VAC, 50/60Hz.
When the unit is charging properly, the yellow “battery” light at the bottom right of the
front of the unit will flash about 1 time per second (see photo below). When charging is
complete, the flashing will stop and the light will be off.
Notes:
• Do not attempt to charge the batteries with any charger other than the one
provided by Merrick. The batteries must be charged within the unit itself.
• Do not replace the batteries except with batteries supplied by Merrick. Observe
the correct polarity when replacing batteries.
• NEVER attempt to charge non-rechargeable batteries (i.e. alkaline)
• Do not charge the unit in a hot area

MERRICK Genetix Specifications

Operating Environment

maximum ambient temperature	50°C (122°F)
minimum ambient temperature	-10°C (14°F)

Power

supply voltage	24 VDC +/- 1V
power consumption	8W nominal, 12W maximum
power dissipation	5W nominal, 10W maximum

Loadcell Inputs

excitation voltage	5 VDC
excitation current	300mA (max)

Tachos

supply voltage	5 VDC
supply current	400mA, maximum (total)

Analog Inputs

input impedance (current input)	200 ohms
input impedance (voltage input)	100Kohms

Digital Inputs

input impedance at 24 VDC	7.5 KΩ
input impedance at 120 VAC	64 KΩ
input impedance at 240 VAC	120 KΩ

Digital Outputs

contact ratings (AC)	5A, 250 VAC
contact ratings (DC)	5A, 30 VDC

External Mechanical Totalizer

contact ratings (AC)	120mA, 240 VAC
contact ratings (DC)	120mA, 24 VDC