DBK24 Isolated Digital Output Chassis Overview 1 Power Requirements 2 Hardware Setup 2 Card Connection 2 Card Configuration 3 DaqBook and DaqBoard Connection 4 DaqBoard/2000 Series Board Connection 5 DaqBook and DaqBoard Configuration 5 LogBook Connection 5 Software Setup 5 DBK24 Specifications 7 Reference Notes: o Chapter 2 includes pinouts for P1, P2, P3, and P4. Refer to pinouts applicable to your system, as needed. o In regard to calculating system power requirements, refer to DBK Basics located near the front of this manual. Overview The DBK24 is a 3 8-channel digital output chassis that connects to the LogBook s, DaqBook s, or DaqBoard s [ISA type] P2 Digital I/O Port or, for a DaqBoard/2000 Series board [except DaqBoard/2003] to an appropriate P4 adapter. These adapters are discussed in the DBK200 Series document modules. The DBK24 provides 500 V isolation from the system and from channel-to-channel. Up to 8 DBK24s can attach to the LogBook, DaqBook, or DaqBoard (not the Daq PC-Card), offering up to 192 bits of isolated digital output. The DBK24 provides screw-terminal access to each of its 24 isolated outputs. A slide-out PCB allows easy access to the controls and connectors. The output circuitry allows output voltages as high as 60 V at currents up to 1 A. The local digital I/O cannot be used while any DBK24s are attached. DBK Option Cards and Modules 879795 DBK24, pg. 1
Power Requirements The DBK24 can be powered by an included AC adapter, a standard 12-V car battery, or an optional rechargeable nickel-cadmium battery module (DBK30A). This power flexibility makes the DBK24 ideal for field and remote data acquisition applications. Power supplied to the DBK24 powers the on-board regulator. Connect the power supply (AC adapter) to the 5-pin DIN (labeled POWER IN) located on the front panel of the DBK24 chassis. Note the two power indicators on the rear panel of the DBK24. Check that both SYSTEM and LOCAL power LEDs are on at all times during operation. The second 5-pin DIN connector (labeled POWER OUT) can be cascaded to another accessory. A single power source can supply multiple DBK24 units. CAUTI Excessive power consumption can cause equipment damage. Calculate system power requirements prior to daisy-chaining. Refer to Power Requirements in the DBK Basics section for calculation tables. Hardware Setup Card Connection Open the DBK24 case by loosening the two retaining screws on the chassis front panel. Slide out the DBK24 board in order to connect wires to terminal blocks. Each input channel (or bit) is equipped with a discrete two-pole screw terminal block for isolated HI and LOW termination. The terminals accept 12 to 22 AWG wire. Insulated wire types selected should meet or exceed 500 V isolation specifications. DBK24, pg. 2 879795 DBK Option Cards and Modules
DBK24 simplified Component Layout Strip some insulation from the ends of the wires (no more than 1/4"). Insert wire into the screw terminal receptacle so that only the bare portion of wire extends into the opening. Bare wire should not extend more than 1/16" beyond the receptacle. These steps are essential to maintaining proper voltage isolation. After the wire ends are in place, turn the slot-head screw at the top of the block until the receptacle grips the wire firmly. Do not over tighten. Captive holes have been placed in appropriate locations to secure groups of wires to the board. Nylon lock ties (not included) work well for this purpose. Card Configuration Factory Default: Power-up output state Hi () Presetting the Outputs Each of the 24 outputs of the DBK24 can be configured to be or at system power-on time. Each port has an 8-pole DIP switch (Port A Preset, Port B Preset, and Port C Preset). Before applying power to the LogBook, DaqBook/DaqBoard, or the DBK24: 1. Locate the DIP switch (Port A Preset, Port B Preset, or Port C Preset) for the bit you wish to preset. 2. Move the applicable micro-switch to the desired state [ or ] for the output. 3. First power on the DBK24, then the primnary acquisition device, i.e., the LogBook, DaqBook, or DaqBoard. All outputs will be operating in accordance with their corresponding DIP switch. Note: The first write command received by the DBK24 will override the switch settings until the unit is again power-cycled. Subsequently, until the first write command is received, the switches may also be used to control the outputs. DBK Option Cards and Modules 879795 DBK24, pg. 3
User Output Configuration The outputs of the DBK24 are designed to switch levels as high as 60 V at 1 A. The next figure shows a typical output hookup with a protective flyback diode in parallel with the load. When driving inductive loads without built-in flyback protection, you must provide this diode. CAUTI Failure to provide adequate flyback protection may result in damage to the DBK24 s output stage. Each unit is configured via the on-board DIP switch (S1) for its unique base address. No more than one unit in a common chain may have the same S1 setting. Below is a table of possible switch settings and addresses. Bank Card No. S1 Configuration Address Value (Hex) C B A Port C Port B Port A 0 0 0 0 0 0x62 0x61 0x60 1 0 0 1 0x66 0x65 0x64 1 2 0 1 0 0x6A 0x69 0x68 3 0 1 1 0x6E 0x6D 0x6C 2 4 1 0 0 0x72 0x71 0x70 5 1 0 1 0x76 0x75 0x74 3 6 1 1 0 0x7A 0x79 0x78 7 1 1 1 0x7E 0x7D 0x7C Software constants have been predefined in the DaqBook/DaqBoard driver language interface files for all languages as follows: DdpExpnA, DdpExpnB, DdpExpnC; where n is replaced by the card number in the address table; and A, B, or C is the port for that card. DaqBook and DaqBoard [ISA type] Connection Connect the P2 digital I/O port of the DaqBook or DaqBoard [ISA type] or, for a DaqBoard/2000 Series board [except DaqBoard/2003] to an appropriate P4 adapter, to the P2 connector of the DBK24 using an accessory cable (with -x indicating the number of expansion units to be connected). Select up to 8 positions for a total of 192 programmable isolated inputs. DBK24, pg. 4 879795 DBK Option Cards and Modules
DaqBoard/2000 Series Board Connection Use a 37 pin accessory cable to connect the P2 digital I/O port of the DaqBoard/2000 Series P4 adapter to the P2 connector of the DBK24 using an accessory cable (with -x indicating the number of expansion units to be connected). Select up to 8 positions for a total of 192 programmable isolated inputs. P4 adapters are discussed in the DBK200 document modules. P2 expansion cables must be kept short for proper operation. Do not exceed 14 per attached DBK card. DaqBook and DaqBoard Configuration The DBK24 requires no hardware configuration setups internal to the DaqBook or DaqBoard. LogBook Connection Connect the P2 digital I/O port of the LogBook to the P2 connector of the DBK24 using an accessory cable (with -x indicating the number of expansion units to be connected). Select up to 8 positions for a total of 192 programmable isolated inputs. Software Setup Reference Notes: o DaqView users - Refer to chapter 3, DBK Setup in DaqView. o LogView users - Refer to chapter 4, DBK Setup in LogView. Note: Refer to the full-page table on the next page for valid hex codes. DBK Option Cards and Modules 879795 DBK24, pg. 5
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00000000 00000001 00000010 00000011 00000100 00000101 00000110 00000111 00001000 00001001 00001010 00001011 00001100 00001101 00001110 00001111 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 01000000 01000001 01000010 01000011 01000100 01000101 01000110 01000111 01001000 01001001 01001010 01001011 01001100 01001101 01001110 01001111 80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E 8F 10000000 10000001 10000010 10000011 10000100 10000101 10000110 10000111 10001000 10001001 10001010 10001011 10001100 10001101 10001110 10001111 C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF 11000000 11000001 11000010 11000011 11000100 11000101 11000110 11000111 11001000 11001001 11001010 11001011 11001100 11001101 11001110 11001111 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 00010000 00010001 00010010 00010011 00010100 00010101 00010110 00010111 00011000 00011001 00011010 00011011 00011100 00011101 00011110 00011111 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 01010000 01010001 01010010 01010011 01010100 01010101 01010110 01010111 01011000 01011001 01011010 01011011 01011100 01011101 01011110 01011111 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F 10010000 10010001 10010010 10010011 10010100 10010101 10010110 10010111 10011000 10011001 10011010 10011011 10011100 10011101 10011110 10011111 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF 11010000 11010001 11010010 11010011 11010100 11010101 11010110 11010111 11011000 11011001 11011010 11011011 11011100 11011101 11011110 11011111 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 00100000 00100001 00100010 00100011 00100100 00100101 00100110 00100111 00101000 00101001 00101010 00101011 00101100 00101101 00101110 00101111 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 01100000 01100001 01100010 01100011 01100100 01100101 01100110 01100111 01101000 01101001 01101010 01101011 01101100 01101101 01101110 01101111 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF 10100000 10100001 10100010 10100011 10100100 10100101 10100110 10100111 10101000 10101001 10101010 10101011 10101100 10101101 10101110 10101111 E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF 11100000 11100001 11100010 11100011 11100100 11100101 11100110 11100111 11101000 11101001 11101010 11101011 11101100 11101101 11101110 11101111 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 00110000 00110001 00110010 00110011 00110100 00110101 00110110 00110111 00111000 00111001 00111010 00111011 00111100 00111101 00111110 00111111 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 01110000 01110001 01110010 01110011 01110100 01110101 01110110 01110111 01111000 01111001 01111010 01111011 01111100 01111101 01111110 01111111 B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF 10110000 10110001 10110010 10110011 10110100 10110101 10110110 10110111 10111000 10111001 10111010 10111011 10111100 10111101 10111110 10111111 F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF 11110000 11110001 11110010 11110011 11110100 11110101 11110110 11110111 11111000 11111001 11111010 11111011 11111100 11111101 11111110 11111111 DBK24, pg. 6 879795 DBK Option Cards and Modules
DBK24 - Specifications Name/Function: General Purpose Optically Isolated Digital Output Module Channels: 24 I/O channels Connector: Screw terminals for signal outputs Output Channel Ratings: Maximum current/channel: 1 A Voltage drop @ 1 A and 25 C: 1 V Maximum open circuit voltage: 60 VDC Off-state leakage: 10 µa Module Power Requirements: 1.5 W 120 VAC Adapter Supplied: 15 VDC @ 0.9 A Isolation Voltage: Channel-to-channel: 500 V Channel-to-system: 500 V Channel Address: Set by DIP switch Maximum Module Power Dissipation: @ 25 C 12 W @ 50 C 6 W DBK Option Cards and Modules 879795 DBK24, pg. 7
DBK24, pg. 8 879795 DBK Option Cards and Modules