使用多个模块最多可控制256个控制端口
概述
With an SDM-CD16AC, your Campbell Scientific data logger can automatically activate external ac or dc devices such as motors, pumps, heaters, valves, and fans. This ac/dc relay controller has 16 ports for connecting your ac or dc devices. Each port can be controlled automatically by the data logger’s program or controlled manually with an override toggle switch.
阅读更多的特点和好处
- Allows the data logger to automatically turn devices on or off when a threshold (for example, temperature or water depth) has been reached
- Addresses up to 16 SDM-CD16ACs, allowing up to 256 ports to be controlled by one data logger
- 包括指示端口处于活动状态时的LED
- 为每个端口提供手动覆盖
- UL / CUL批准的产品
图片
详细描述
The SDM-CD16AC has a toggle switch that provides three positions: ON and OFF for manual override, and AUTO for data logger control.
- 在接通位置，常见（COM）和常开（NO）触点关闭。
- In the OFF position, the normally open contact is open.
- 在自动位置，继电器的状态由通过数据记录器的控制端口或SDM终端发出的SDM命令控制。
SDM操作
SDM-CD16AC是一个同步寻址的数据记录器外设。数据记录器控制端口1,2和3用于地址SDM-CD16AC，然后将每个16个控制端口的所需状态下降。可以解决最多16个SDM-CD16AC，使得可以从前三个数据记录器控制端口控制最多256个端口。
规格
| Function | 允许一个数据记录器自动激活external ac or dc devices such as motors, pumps, heaters, valves, and fans. |
| Number of Channels | 16. |
| Operating Temperature | -4.0° to +55°C |
| 湿度 | Non-condensing |
| 联系操作 | 单杆双掷（制作前休息） |
| Contact Material | Gold-clad silver |
| 线圈电压 | 11到18 VDC |
| 线圈电阻 | 360 Ω ±10% |
| 预期寿命（联系闭包） | Mechanical 107. |
| 致动/释放时间 | ~4 ms |
| Toggle Switch |
|
| Operating Voltage | 12 VDC标称（11至18 VDC） |
| Standards | Underwriters Laboratories (UL) listed product (E162021) |
| 方面 | 24.6 x 5.1 x 8.6 cm (9.7. x 2.0 x 3.4 in.) |
| 重量 | 0.8 kg (1.8 lb) |
个人联系评级 |
|
| 通常是开放的评级 |
|
| 通常是闭合的评级 |
|
当前排水管@ 12 VDC |
|
| 静止 | 6 mA |
| Per Active LED | 45 mA（开启或自动活动） |
兼容性
笔记：The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.
数据记录器
| 产品 | 兼容的 | 笔记 |
|---|---|---|
| 21X（退休） | ||
| CR10（退休） | ||
| CR1000（退休） | ||
| CR1000X. | ||
| CR10X.（退休） | ||
| CR200X（退休） | ||
| CR206x（退休） | ||
| CR211X（退休） | ||
| CR216x.（退休） | ||
| CR23x.（退休） | ||
| CR295x.（退休） | ||
| CR300 | ||
| CR3000（退休） | ||
| CR310 | ||
| CR350 | ||
| CR500（退休） | ||
| CR5000.（退休） | ||
| CR510（退休） | ||
| CR6 | ||
| CR800. | ||
| CR850 | ||
| CR9000（退休） | Although the CR9000 is compatible, the SDM-CD16AC does not support its fastest communication rates and therefore is not practical for most of its applications. | |
| CR9000X（退休） | Although the CR9000X is compatible, the SDM-CD16AC does not support its fastest communication rates and therefore is not practical for most of its applications. |
Mounting Equipment
| 产品 | 兼容的 | 笔记 |
|---|---|---|
| ENC10/12 | ||
| ENC10 / 12R. | ||
| enc12 / 14. | ||
| ENC14/16 | ||
| ENC16/18 | ||
| ENC24/30 | ||
| enc24 / 30s. |
Additional Compatibility Information
Data Logger Considerations
Up to 16 SDMs can be connected to our data loggers. To communicate with connected SDM devices, the CR3000 and CR5000 use the SDM-C1, SDM-C2, and SDM-C3 ports. The other data loggers use ports labeled C1, C2, and C3. The 21X also requires channel 1H.
编程
SDMCD16AC指令控制CRBASIC中的SDM-CD16AC操作。EDLOG指令29控制CR7中的SDM-CD16AC操作，EDLOG指令104控制CR10（x），CR23x和21 x数据记录器中的SDM-CD16AC操作。
Power Considerations
数据记录器的可充电电源连接到我们的较新的1.2墙壁充电器，足以为SDM-CD16AC供电。SDM-CD16AC的LED在活动时消耗45 mA。如果所有16个LED一次有效，则应预期超过720 mA的电流漏极。如果将使用多个SDM-CD16AC，则可能需要深放电外部电池。此外部电池应与数据记录器的地面共享公共接地点。
坎贝尔科学不推荐使用数据记录器的碱性电池为SDM-CD16AC供电，以便长期应用。
外壳考虑因素
SDM-CD16AC需要干燥的非凝聚环境;建议坎贝尔科学围栏。提供索环和螺钉，以将凸缘/支架连接到外壳的背板。
Documents
Downloads
SDM-CD16AC.Program Examples v.1 (3 KB)08-30-2021
There are three example programs for the CDM-CD16AC. The first program uses a counter to fill an array called srs() that will control two SDM-CS16ACs. The remaining two programs are designed to control the temperature in five greenhouses. The temperature will be maintained between 23 and 28 °C in each greenhouse. In each greenhouse, the SDM-CS16AC controls a heating unit, a refrigerating unit, and an air-mixing fan according to these conditions.
Heating unit: Activate when temperature < 23.5 °C. Deactivate when temperature > 25.5 °C
冷却装置：温度> 27.5°C时激活。温度<24.5°C时停用
混合风扇：每当激活加热或冷却单元时激活。每15分钟一次激活5分钟。
程序2和程序3之间的差异是用于控制输出的方法。程序2使用数组来设置SDM-CD16AC输出。程序3使用长整数，在变量中使用每个位控制输出之一。
经常问的问题
与之相关的常见问题解答数量SDM-CD16AC.：4.
Expand AllCollapse All
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No. The SDM-CD16S was designed to switch dc loads (7 to 48 Vdc; 2 A maximum per channel). The load power is isolated from the logic power (12 Vdc).
To switch an ac load, consider using an SDM-CD16AC.
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No. The SDM-CD8S was designed to switch dc loads (12 Vdc nominal; 1 A maximum per channel, total current on all channels not to exceed 6 A). The SDM-CD8S switches the-outputs, rather than the+output. This is called a low-side switch. The+output is the same voltage as the PWR used to power the SDM-CD8S to ground.
To switch an ac load, consider using an SDM-CD16AC.
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是的。最多15个SDM设备可以附加到数据记录器，因为它们是可寻址的，其Hex数为0到F.其中一些设备可能需要更多的功率，因此在添加设备时需要考虑。
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以下中继设备可与CR800和CR850一起使用：
- 7321.
- A6REL-12*
- A21REL-12
- LR4
- SDM-CD8S
- SDM-CD16AC.
- SDM-CD16S.
The CR800 and the CR850 can also be used with a wide variety of third-party relay devices.
*Because the CR800 and the CR850 only have four digital ports, they do not have the ability to switch all six of the relays on the A6REL-12.
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