Lubrication Timer & Controller — TC-2 Series
The TC-2 lubrication timer is a programmable controller that starts and stops pump cycles, monitors line pressure, and alarms on faults in centralized grease and oil systems. It is widely used on mobile equipment (ignition-switched 12/24 VDC) and fixed industrial panels (24 VDC or AC supply options).
Key features: non-volatile memory (settings retained after power loss), LCD parameter display, manual/auto mode, multiple alarm outputs (low pressure, high pressure, reservoir level when wired), and four operating modes to match single-line resistive (SLR), progressive injector (PDI), and dual-line (PRG) architectures.
Pair the timer with grease pumps, pneumatic grease pumps, solenoid valve banks, and progressive manifold blocks. For full system design, see automatic lubrication systems.
- Parameter
- Four Control Modes
- Video
Electrical & Environmental
| Parameter | Specification |
|---|---|
| Model | TC-2 lubrication timer / controller |
| Supply voltage | DC 12 V or DC 24 V (mobile); AC 220 V / 380 V options for cabinet mount |
| Power source (mobile) | Vehicle ignition or keyed power input |
| Protection | IP47 enclosure suitable for cab or sealed panel |
| Operating temperature | −10 °C to +40 °C |
| Display | LCD for time, pressure, cycle count, and fault codes |
| Memory | Settings saved after power interruption |
| Outputs | Pump run, solenoid valve, alarm relays (configurable) |
Compatible System Types
- SLR — single-line resistive / injector systems
- PDI — progressive divider injector systems
- PRG — dual-line / reversing valve systems
1. Time control
Set lubricate time (pump or valve ON) and pause time (OFF). Best for fixed-interval greasing on presses, conveyors, and CNC machines where consumption is predictable.
2. Pressure control
Works with injector or line pressure switches. Pump runs until line pressure reaches setpoint, then pauses until pressure bleeds down—ideal when dose must track actual line fill, not just a clock.
3. Cycle count mode
Counts piston cycles on progressive blocks equipped with a cycle switch (proximity or mechanical). Ensures one full divider cycle completes before the next pump run—prevents short cycling on multi-outlet manifolds.
4. Pulse count mode
Programs ON/OFF pulses to a solenoid valve for dual-line reversal or multi-line selector manifolds. Each pulse advances the line state; total count limits prevent over-pressurization.
Operator Features
- Manual lubrication — override one shot for commissioning or service
- Auto mode — returns to programmed schedule after manual test
- Alarm outputs — low oil pressure, high pressure, reservoir low level (when sensors fitted), overtemperature or generic fault
- Low power consumption — suitable for battery-sensitive mobile installs when ignition is OFF (memory retained)
What Is a Lubrication Timer?
A lubrication timer (controller) is the brain between your power supply and the pump or solenoid valves. It decides when to lubricate, how long to run, and when to stop based on time, pressure, or mechanical feedback—so bearings receive grease on schedule without operator dependency.
Unlike a simple time relay, the TC-2 supports multiple control strategies, LCD configuration, fault annunciation, and settings that survive power loss—important on trucks and excavators where battery disconnect is common.
Why Digital Control Matters
- Repeatable intervals — reduces over-lubrication (waste, seal damage) and under-lubrication (wear)
- Pressure feedback — detects blocked lines, broken hose, or empty reservoir early
- Cycle verification — confirms progressive dividers actually indexed
- Service visibility — LCD shows last fault and operating mode for faster troubleshooting
System Integration Diagram (Conceptual)
- Power in — ignition or panel supply to timer
- Timer outputs — pump motor, air solenoid, or dual-line reversing valve
- Inputs — pressure switch, level switch, cycle sensor on progressive block
- Distribution — pump → main line → manifold block → tubing → lube points
Selection Checklist
- Confirm voltage (12 VDC mobile vs 24 VDC industrial vs AC panel)
- Match control mode to system type (time vs pressure vs cycle vs pulse)
- Count required alarm outputs for PLC or cab buzzer
- Verify IP rating for washdown or outdoor cabinet
- Plan sensor wiring—pressure switch location on main line or injector outlet
Commissioning Steps
- Wire pump and sensors per electrical drawing; fuse per motor inrush.
- Set conservative lubricate / pause times; observe one full cycle at the machine.
- In pressure mode, adjust setpoints so pump stops when line is charged but before relief bypass wastes grease.
- In cycle-count mode, verify proximity switch triggers once per full divider rotation.
- Test manual shot and each alarm input before handing over to operations.
IsoHiTech controllers are built for easy operation, smart fault logic, and IP47 protection in harsh plant and mobile environments.
We supply TC-2 series controllers with LCD setup, manual/auto switching, four control modes (time, pressure, cycle count, pulse), and multiple alarm outputs for pressure, level, and general faults. Voltage options cover 12/24 VDC mobile and AC industrial panels.
Use time mode for simple interval greasing. Use pressure mode when injectors must prove line pressure before pause. Use cycle count with progressive blocks that have a cycle switch. Use pulse mode for dual-line solenoid sequencing.
TC-2 retains programmed parameters in non-volatile memory—settings are restored when power returns, which is essential on vehicles with daily ignition cycles.
Yes, provided pump motor or solenoid coil voltage/current are within the controller output rating. Program pause times longer for oil circulation systems if return-line pressure must stabilize.
Typical configurations include low line pressure (blocked line or empty pump), high pressure (plugged point or mis-set relief), reservoir low level (when float switch fitted), and generic fault. Alarm contacts can drive cab lamps, PLC inputs, or buzzers.
IP47 protection and −10 °C to +40 °C operating range suit cab mounts and sealed boxes. Route wiring away from heat and crush zones; use Deutsch or sealed connectors where vibration is high.
Outputs energize the grease pump or air valve; inputs read pressure and cycle switches on the main line or progressive manifold. See quality control for tested pump-timer skids.