Page 66 MAN Page 67 MAN Page Introduction MAN Identify a suitable location and check the cabling requirements. Page Unpacking MAN Check the contents for transit damage and against the packing note for deficiencies. Page Location MAN Page Cabling MAN Cables should be routed carefully to avoid physical and environmental hazards such as mechanical stress and high temperatures.
Page 73 MAN Page Ventilation MAN In heavily populated racks, especially Page Preliminaries MAN Ensure that where an AC to DC Power Supply Unit is to be used, this is compatible with the local mains ac supply voltage and that the PSU power rating is adequate for its individual system load. Page 77 MAN Page 78 MAN Page 80 MAN In general, sensors for lighter than air gasses should be located at a high level and sensors for heavier than air gasses should be located at a low level. Page 83 MAN Page The following sections identify the links to allow the configuration to be inspected.
Page 87 MAN A link is closed by fitting the jumper provided so that the two pins of the link are connected. Unused links should have their Page 88 MAN Page 89 MAN This can be achieved where the cable enters the cabinet by using a metal cable gland, or by other suitable means, and avoiding any screen 'tails' within the cabinet. Page 90 MAN Page 91 MAN Page 92 MAN Page 93 MAN Page 94 MAN Check that the transmitter to be connected is compatible with the actual supply voltage used.
Page 95 MAN Page 96 MAN Page 97 MAN Page 98 MAN Page 99 MAN Page MAN Where a sensor is earthed locally, either to the Earth Stud or Check the configuration sheet supplied with the system to determine the operating mode of the relays on each channel. Check the configuration sheet supplied with the system to determine the factory configured operating mode.
Disconnect from the ac supply for a period of at least five minutes before removing the top cover and carrying out any maintenance or upgrade operation. Page General MAN Appropriate safety precautions must be taken when commissioning or servicing the system. Start-up the system as follows: Ensure that the system power supply is switched off. Page Calibration MAN Adjust the sensor head current of catalytic sensors as described in Chapter 7 Section 7 to the required value as indicated in the sensor operating instructions.
Page Maintenance MAN The error codes used and their meaning are listed in the following sections. Active RAM stores the working values during operation. Active The Vps plug-in is used to set the Vps reference and is not suitable for operating sensors. Active The actual and demanding states of the high integrity relay outputs do not match. Reset card by removing power to the card.
Fault Action The Engineering Card front Facilities that may effect the way the system operates are covered in the Engineer's Operating Instructions Chapter 7 which refers to facilities available when the Engineering Key is fitted. Channel select. View alarm levels. This will: Reset all latched and non-active alarms associated with the control card. See Section 3.
Without the Engineering Key fitted to the Engineering Card, the following Push the reject push-button or wait 30 seconds to exit the Bead mA mode. The displayed parameter is dependent upon the type of sensor drive module fitted to the selected channel card. Note: The clock uses the 24 hour format. Push the CLOCK push-button a second time and the selected channel card display will indicate the present day, month and year. Because the operation of the system can be altered or impeded by these functions, they can only be performed when the Engineering Card is unlocked by the Engineering Key.
Channel Select. When the inhibit mode is set to on, either locally from the Engineering Card or remotely by the Remote Inhibit input, the selected control card: inhibit relay, if fitted, is actuated. To select the span operation, proceed as follows Notes: 1.
Apart from oxygen, every sensor should be zeroed before being spanned. Note: Pressing the push-button at any time during the above sequence will return the Engineering Card to the selected mode without changing the clock time and calendar date. Page Specification MAN EN Software and Digital Technologies. Meets Exe isolation requirements for 50V operation.
Digital Display: Four character. Message Display: Four character. Current Adjustment: Electronic in 1mA steps. Range 2 mA to mA. Range 3 mA to mA. Maximum Line Resistance: ohms loop resistance including sensor. Reject and Accept. Print Up and Down together. Functions: Bead mA Alarms Zero Hinged: Left hand side. Lock: Right hand side. Colour: RAL slate grey. The detector documentation will indicate the positive and negative loop connections.
Channel 2, 3 and 4 connections are similar and their terminal connection numbers are shown in section 7. Notes: 1. This can be achieved where the cable enters the cabinet by using a metal cable gland, or by other suitable means, and avoiding any screen tails within the cabinet. EN Software and Digital Technologies. Meets Exe isolation requirements for 50V operation.
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