Rice Lake Combination System - Precision Loads On-Board Weighing Systems - Manual (Page 75)

Appendix 71
6.10 PL9710 Indicators with PL9774 Limit Setpoint Option
For Model PL9710 Indicators used with a Model PL9774 Limit
Setpoint module, the following instructions apply.
For dual limit setpoint applications, Model PL9710
indicators must be ordered with the dual limit setpoint
option software installed. Standard PL9710 indicators will
not contain this option software, it must be added by Rice
Lake Weighing Systems.
Note
6.10.1 System Configurations
The PL9774 Limit Setpoint option may be used with single channel on-board scale system configurations (3, 4, 5
or 6-point load cell kits) connected to indicator channel one (CH-1). Also tractor/trailer scale systems using
PL9710 indicator set for dual channel operation (CH-1, CH-2, TOTAL) may also be configured with the PL9774
Limit Setpoint option. However, limits are only operable in the Total Gross weight mode. Limit Setpoint control
for each individual channel of a dual channel indicator is available by special order only.
6.10.2 Limit Module Connections
Model PL9774 Limit Setpoint Module is typically supplied with an 8 ft (2.43 m) lead for inter connection to the
PL9710 indicator, and a 15 ft (4.57 m) lead for inter connection to lights/alarms and light/alarm power source. See
Figure 6-5 for help wiring your particular application.
Figure 6-5. Relay Box Wiring Diagram
The 8 ft lead to the indicator has four conductors. The Black and Red conductors may be wired to the GND and
+12Vdc terminals as shown on the rear terminal strip of the PL9710. The Green conductor connects to terminal L1
(Limit 1) and the White conductor connects to terminal L2 (Limit 2) on the rear strip of the PL9710. The 15 ft Red
(Power) lead of the PL9774 is wired to the positive power source of the lights or alarms being used, with light/
alarm ground wired to the negative power source terminal. Green (L1) and White (L2) conductors are wired to the
positive terminals of the light or alarm as shown in Figure 6-6.