The LOADGUARD is an electronic load limiter with redundant weight control by reading up to two independent input signals from the load cells or load pins. Its output relays act according the alarm setting, weight differences between channels or system failures. The main applications are the control and overload protection in lifting equipments, cranes and machinery.
| LOAD CELL CONNECTION | ||
| Input signal range | ± 3,9 | mV/V |
| Input sensitivity | 0,2 | microV |
| A/D converter | 24 | bits |
| Linearity error | ≤ 0,01 | % measuring range |
| Temperature stability | < 0,002 | % FS/ °C |
| Load cell excitation voltage | 4 | V DC |
| Minimum load cell resistance | 87 | Ohm |
| Load cell inputs | 2 | independent |
| Max. amount of load cells | 4 … 350 Ohm 8 … 700 Ohm |
no. of load cells/input |
| INPUTS/OUTPUTS | ||
| Alarm output | 4 control relays: alarm threshold, pre-alamr threshold, maximum load difference between channels and load cell cable break detection | |
| Contacts from relay | 48V DC/AC, 2A | |
| Analog output (version 89148) | 4-20mA / load cell input | |
| A/D converter | 16 bits | |
| POWER SUPPLY, MECHANICAL PARAMETERS | ||
| Supply | 10 to 30VDC | |
| Consumption | 6 W | |
| Working temperature | -20 °C to 50 °C | |
| Storage temperature | -20 °C to 60 °C | |
| Operator interface | 4 LED digit 7 mm, 4 keys | |
| Weight | Version 89147 … 0,3 kg Version 89148 … 0,4 kg |
|
| Mounting | DIN rail | |
| Ingress protection | IP 20 | |
