LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 3 / 14 Valve automation leader HKC
1. Introduction
1.1 Purpose
The LCU-P unit was developed to add a PCU function to the LCU-B unit for the HQ and HL
series electric actuators, and it is possible to add a communication module such as ProfiBus
and ModBus for customer convenience. This manual is intended for safe use, installation and
maintenance of the LCU-P.
1.2 The LCU-P board has Local mode which can be operated directly from local control and
Remote mode which can be remotely operated in distance. It is also possible to integral
control of on/off operation and remote modulation operation which input a command signal
of 4~20 mA range.
1.3 This product is equipped with 8 BIT RISC CPU to guarantee various functions and high
reliability, including self-diagnosis function. The user can conveniently diagnose the error from
WINDOW LED status
1.4 Safety Notices
Safety notices in this manual outline precaution the user must take to reduce the risk of
personal injury and damage to the equipment. The user(s) must read these instructions before
the installation, operation or maintenance of HQ-series electric actuators.
DANGER:
Refers to personal safety and alerts the user to danger or harm.
The hazard or unsafe practice will result in severe injury or death.
WARNING:
Refers to personal safety. Alerts the user to potential danger.
Failure to follow warning notices could result in personal injury or death.
CAUTION:
Directs the user’s attention to general precautions that, if not followed,
could result in personal injury and/or equipment damage
.
Notes: Highlighted information is critical to the user’s understanding of the
actuator’s installation and operation.
2. Check point before using the actuator
2.1 Make sure that the actuator specification (model number, main power, control power,
optional items, and etc.) is in conformity with the order specification.
2.2 Check that the size, pressure rating, etc. of the valve is in accordance with the order
specification.
2.3 Check that the actuator and the valve are assembled securely.
2.4 Check the status of the limit switches, stopper bolts, and indicator setting of the actuator.
2.5 Make sure to check the electrical specifications (power, input/output signal, wiring status
according to the wiring diagram, and etc.)
2.6 Do not arbitrarily modify, alter or repair the wirings of the actuator.
2.7 Before shipped from the factory, the settings of Dead band and Dead time are pre-adjusted
basically. If the user has arbitrarily adjusted the position of the limit switches or the
potentiometer, please make re-setting the present status through press the Auto setting
function on the LCU-P board.
2.8 Please do not disassemble, assemble, or modify the actuator without any technical support
or explanation from HKC. If any abnormality or problem occurs, please contact us
immediately.
Caution:
In order to use the product correctly and safely, please make sure to fully understand the
contents of this manual before using the product.
Some contents of this manual may be subject to change without prior notice for the
purpose of improving the quality, etc.
